commit 93a010467045f6c8f6b5f69524c638c52b204b77 · dunkirk.sh/aoc-2025

+10

scripts/generate-vis.ts

···

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       		description:

     

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       			"3D visualization of junction boxes being connected by their shortest distances. Watch circuits form as connections merge isolated boxes into larger groups.",

     

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       	},

     

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       };

     

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       const dayCards = days

···

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       		description:

     

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       			"3D visualization of junction boxes being connected by their shortest distances. Watch circuits form as connections merge isolated boxes into larger groups.",

     

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       	},

     

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       	"09": {

     

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       		title: "Movie Theater Floor",

     

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       		description:

     

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       			"Find the largest rectangle using red tiles as opposite corners. Part 1 allows any rectangle, Part 2 requires rectangles to only contain red/green tiles.",

     

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       	},

     

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       	"10": {

     

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       		title: "Factory Machines",

     

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       		description:

     

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       			"Configure indicator lights by pressing buttons that toggle specific lights. Find the minimum number of button presses to match the target configuration.",

     

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       	},

     

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       };

     

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       const dayCards = days

+197

shared/10/input.txt

···

       1
       +
       [...###.#.#] (1,8) (0,4,5,6) (2,3,4,5,6,7,8) (5) (0,3,5) (0,1,5,6,7,9) (0,7,9) (0,1,2,3,5,6,8,9) (0,1,2,3,4,5,7,8,9) (0,2,4,6,7,8,9) (1,2,3,4,6,7,8,9) (0,9) {65,41,48,35,50,67,76,68,55,61}

     

       2
       +
       [##.#..] (0,2,3,5) (0,2,3,4) (0,1,2,4) (1,4) (2,3,4,5) (1,4,5) (0,3,4) (3) {56,191,62,82,236,212}

     

       3
       +
       [...#.] (2,3,4) (1,2) (1,2,3,4) (0,2,3) (3) (0,3,4) {194,25,212,218,39}

     

       4
       +
       [###..] (1,2) (1,2,3) (3,4) (0,1,2) (1,3,4) {12,52,35,43,28}

     

       5
       +
       [#..####] (0,3,4,5,6) (0,1,3,5,6) (0,1,2,6) (0,3) (0,1,2,3) (4,5) (3,4) {47,46,31,136,104,19,27}

     

       6
       +
       [#.#.#] (0,1,2) (1,2,3) (0,2,3) (1,2) (0,4) (1,3) {35,44,50,27,10}

     

       7
       +
       [.#...###.] (4,5,6) (3,5,6) (0,2,4,6) (0,2,6,8) (0,1,8) (1,3) (0,1,2,4,5,7,8) (2,5,7) {39,33,32,11,41,35,37,15,29}

     

       8
       +
       [.#.####] (0,1) (0,4,5,6) (1,3,4,5) (1,5) (1,2,3) (1,2,3,6) (0,1,3,4,6) {43,87,30,61,37,26,44}

     

       9
       +
       [.######.] (0,3,4,5,7) (1,2,4,5,6,7) (1,2,3,4,6,7) (0,1,2) (5,7) (0,1,2,3,4,6) (0,4,5) (2,3) (0,2,3,4,5,7) (0,1,5,7) {34,43,49,20,33,47,21,47}

     

       10
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       [.#####] (0,3) (0,1,3,5) (1,2,3,4,5) (2) (0,1,2) {34,170,162,185,153,168}

     

       11
       +
       [.#.#] (1,3) (0,2,3) {154,10,154,164}

     

       12
       +
       [..#.##] (0,3,4) (2,4,5) (0,1,3,4,5) (0,1,3,5) {28,12,2,28,23,14}

     

       13
       +
       [...#.] (1,2,3,4) (3) (1,2,4) (0,3) (1,4) {168,22,12,188,22}

     

       14
       +
       [##...] (1,2,4) (2,3) (2,3,4) (1,2) (1,2,3) (0,2) (4) {3,30,36,15,11}

     

       15
       +
       [..##] (1) (1,2) (2,3) (2) (0,1,3) (0,3) {11,11,143,25}

     

       16
       +
       [.###..#..] (1,2,4,5,7,8) (0,3,4,5,7,8) (1,3,7,8) (5,7) (6) (0,1,3,4,6) (0,1,2,4,5,6,7,8) (1,3,4,6,7) (0,2,3,4,7,8) (1,5,6) (3,4,5,6,7,8) {49,151,36,57,71,160,141,79,63}

     

       17
       +
       [.#.#] (1,3) (2,3) (1,2) (0,1) (0,1,3) {23,48,18,47}

     

       18
       +
       [.#......#] (0,2,4,6) (1,4,5) (0,2,3) (0,2,4,7,8) (1,3,5,6,7,8) (3,7) (2,3,4,7,8) (1,8) (0,2) {42,20,228,213,224,19,14,205,201}

     

       19
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       [#..#.] (4) (0,1,3) (2,3,4) (1) (0,3) (3,4) (1,2,4) {14,29,10,18,29}

     

       20
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       [.#####.#] (0,1,5,7) (0,4,5,6,7) (2,6) (2,3,5) (1,4,5) (3,5,7) (1,2,3,4,5,6,7) {13,42,24,35,37,68,25,45}

     

       21
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       [###.###.#] (4,6,7) (2,4,6,7) (0,1,4,5) (2,3,4,5,6,7,8) (1,8) (1,2,3,4,6,8) (2,5,6) (0,2,3,5,6,8) (0,5,6,7,8) (1,2,4,6,8) {27,15,61,25,57,58,94,57,47}

     

       22
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       [##.##....] (0,1,2,5,6,7,8) (0,1,2,3,6,7) (0,1,2,6,7) (2,3,6) (0,3,4,7,8) (0,1,2,4,6) (5,7,8) (4,6,7) {47,45,61,37,32,209,77,249,211}

     

       23
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       [.##.##.#.#] (2,4,7,9) (1,4,5,8) (0,1,3,5) (1,4,5) (7) (1,2,8,9) (2,3,7,8) (0,1,2,3,4,7,8) (0,5) (0,2,3) (1,2,5,6,7,8,9) (0,1,2,3,5,9) (4,6,7,9) {69,76,81,72,49,58,6,51,46,40}

     

       24
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       [##..] (0,2) (0,1,3) (0,1) {26,6,20,2}

     

       25
       +
       [.#.#.#.] (0,1,6) (0,3,4) (1,2,3,6) (1,2,3,4,5) (1,2,3,5,6) (0,1,2,3) {21,33,28,34,7,7,22}

     

       26
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       [#..##.####] (8) (3,5) (1,3,4,6) (4,5,7,8) (2,3,4,6,9) (0,1,4,6,7,9) (1,2,3,4,5,6) (1,4,5,6,7) (1,5,6,7) (6,9) (3,6) (0,1,2,3,4,5,8,9) {25,161,35,166,175,74,190,42,29,50}

     

       27
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       [#..#.] (0,2,4) (1,4) (0,3) {22,5,20,2,25}

     

       28
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       [.......#..] (0,3,4,5) (2,3,5,6,8,9) (1,2,3,5,7,8) (0,1,3,4,7) (0,2,3,4,5,6,7) (1,2,5,6,7) (0,1,3,6,8,9) (0,2,6) (0,2) (0,1,3,4,5,7,8) {79,31,88,74,43,75,58,49,44,20}

     

       29
       +
       [.##..###.] (0,2) (1,6) (7,8) (1,3,7) (2,3) (3,4,7,8) (0,2,3,4,5,7) (4,7) (1,2,5,6,7) (0,2,3,4,5,8) {19,38,37,33,26,30,21,65,31}

     

       30
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       [###..#..] (5,6) (0,4) (0,1,2,4,5,7) (0,3,5) (1,2,3,5,6) (0,2) (0,1,2,4,7) (0,3,6) {55,49,51,38,32,53,23,32}

     

       31
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       [..##.#] (1,5) (0,1,2,3,4) (0,1,3) (2,4) (0,3,4) (0,2,4,5) {122,133,27,118,28,20}

     

       32
       +
       [#...#.#] (0,1,2,6) (1,3,6) (0,3,4,5,6) (1) (0,1,4,5,6) (0,4,5) (2,3,4,5,6) (2,3,4) {47,37,38,37,55,37,47}

     

       33
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       [##.###] (0,1,3,4,5) (1,4) (0,5) (1,3,4,5) (1,2,3,5) (0,2,3,4,5) {36,43,22,54,47,57}

     

       34
       +
       [.##...#..] (0,1,3,4,5,7) (0,1,2,3,4,6,8) (0,4,8) (1,5,6,7) (0,1,5,6,7,8) (0,2,4,5,7,8) (0,1,3,5,6) {78,68,23,32,40,77,62,58,53}

     

       35
       +
       [..##.....] (0,4,6,7,8) (1,2,3,5,7) (3,6) (1,3,4) (0,1,2,4,5,6,7,8) (0,1,2,3,4,5) (0,5,6) (2,5,6) {34,44,55,49,35,59,55,33,18}

     

       36
       +
       [.##.#.#..#] (1,2,3,6,8,9) (1,2,5,7,8) (3,7,9) (1,2,4,6,9) (1,2,4,6,8,9) (1,2,5,6,7,8,9) (0,2,5,6,7,8) (0,3,4,6,7,9) (0,2,5,6,7,8,9) {20,44,61,26,25,34,59,55,44,62}

     

       37
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       [#.#.] (0,1,3) (0,2) {213,18,195,18}

     

       38
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       [#..##.] (3,4) (0,1,2,5) (2,5) (0,2,3,4) (0,1,3,4,5) (0,5) {27,12,27,15,15,41}

     

       39
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       [.##..] (0) (1,2,3) (0,4) (1,2) (0,1,2,3) (3,4) (1,3) {42,207,201,207,36}

     

       40
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       [.##.#..] (1,2,3,4,5) (0,3) (2,3,4) (1,3,6) (1,2,4,5,6) (0,1,3,4) (0) {34,123,34,153,35,14,114}

     

       41
       +
       [#.#.#.#] (1,3,5,6) (0,5) (3,6) (1,2,3,4) (0,2) {33,22,29,26,16,26,10}

     

       42
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       [#...##...] (0,1,2,4,5,6,7) (0,1,2,8) (0,2,3,4,6,7,8) (0,2,3) (1,2,3,4,6,7,8) (0,1,2,3,5,6,8) (1,3,5,6) (1,2,4,5,6) (0,5,6,8) {53,48,74,47,55,29,61,48,42}

     

       43
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       [##.#.] (1,3,4) (0,4) (1,4) (0,1,2,3) (1,2,4) {177,213,173,193,44}

     

       44
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       [.#.#.##.#] (1,3,7) (8) (0,1) (4,5) (4,5,8) (0,3,4,5,6,7,8) (2,7) (2,4,6) (0,2,3) {22,15,30,9,21,9,15,17,24}

     

       45
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       [#......#.#] (0,1,2,4,6,7,8) (1,3,7,9) (5,7) (0,2,4,6) (2,4,5,7,9) (3,5,7) (0,1,2,5,6,9) (0,7,8) {54,27,50,24,36,58,34,77,28,35}

     

       46
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       [#.#..##] (0,1,3) (0,2) (1,2,4,6) (3,5) (5,6) (0,4,6) (0,1,3,5,6) (2,6) {33,28,31,20,26,14,44}

     

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       [#..##] (0,1) (2,3) (1,3,4) (0,1,4) {175,177,0,2,168}

     

       48
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       [.###...##.] (8) (0,3,4,5,6,7,8,9) (0,4,5,9) (0,1,2,3,5,7,8) (2,3,4,5,6,7,9) (1,2,3,6,7,9) (0,1,2,3,4,5,7,8) (2,3,5,8,9) (6,8,9) (1,2,3,4,5,6,7,9) (1,4,6,8,9) (0,3,6,9) (0,2,3,7) {65,50,69,97,72,86,95,82,68,117}

     

       49
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       [#..#.#....] (0,2,4,7) (1,8,9) (0,1,3,4,6,7,8,9) (8) (0,1,3,4,5,6,9) (1,3,5,6,7) (0,3,5,6,7) (1,3) (0,3,5) (0,1,4,8) (0,1,2,4,5,7,8,9) {80,81,27,53,70,31,38,56,62,53}

     

       50
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       [#...] (0,1,2) (1,3) (1,2) (0,2) (2,3) {19,41,38,23}

     

       51
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       [.##..] (1,2) (1,3,4) (0,3) {20,29,9,40,20}

     

       52
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       [..#.#.] (3,4,5) (2,3,5) (0,1,2,5) (3,5) (0,1,2) (2,3,4,5) (2,3) {27,27,76,67,25,72}

     

       53
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       [##.##...#] (7,8) (0,2,4,5,7,8) (1,4,6,7) (2,4,5,6) (2,3,4,5,6) (0,1,3,5,6,8) (1,5,7,8) (0,2,5,8) (0,1,3,6) (2,3,4,5,6,7,8) (0,2,3) {56,44,44,48,44,68,60,44,61}

     

       54
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       [#..#.] (0,2,3,4) (0,1,2,3) (1,2,3) (2,4) {12,13,132,25,119}

     

       55
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       [..#...#] (1,2,4) (2,3,4) (2) (0,1,4,5,6) (2,4) (0,1,2,4) (0,2,3,4,5) (0,2,4,5,6) (0,1,2,3,6) {58,42,71,22,64,34,49}

     

       56
       +
       [..##.] (0,2,4) (0,1,2,3) (0,1,4) (1,4) (2,3,4) (1,2,4) {22,44,18,11,41}

     

       57
       +
       [#.#.] (0,1,3) (0,2) {21,1,20,1}

     

       58
       +
       [#...] (0,3) (0,1,3) (0,2,3) (1) (1,2,3) (2,3) {120,35,134,153}

     

       59
       +
       [.#.##.#] (1,3,4,6) (0,1,2,4,5,6) (0,1,2,4,5) (0,2,6) (2,3,5) (4) {54,48,67,27,55,47,50}

     

       60
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       [##.#] (0,2,3) (0,1,3) {18,17,1,18}

     

       61
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       [#.##.....#] (0,2,3,9) (6,8) (1,6,7) (4,5,6) (0,1,3,4,8,9) (3,4,5,6,8) (0,3,7,8) (0,2,3) {22,19,19,28,16,15,36,20,12,1}

     

       62
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       [##.#.] (0,2,3) (0,1,4) (1,3,4) (1,4) (0,1,3) (1,3) {19,62,1,36,42}

     

       63
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       [#.###] (1,3,4) (0,2,3,4) (2,3) {12,19,30,49,31}

     

       64
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       [...##] (0,1,4) (1,2,3,4) (0,2) (0,3) (3,4) (1,2) (0) {18,19,18,18,18}

     

       65
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       [#..#..#.#] (0,1,4) (5,7,8) (2,5,6,7,8) (0,4,5,6) (0,2,3,4,6,8) (1,3,4,5,6,7) (0,2,3,5,6,7,8) (0,1,2,3,4,6,7) (1,2,3,6,7,8) (2,4,5,7) {209,187,45,48,215,71,78,64,43}

     

       66
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       [##....#.] (2,3,4,7) (1,4,5) (0,3,4,5) (0,1,2,5,7) (1,4) (0,1,4,6) (0,3,4) (0,6,7) {30,38,108,107,138,10,17,108}

     

       67
       +
       [..###.###.] (0,9) (1,7) (0,1,2,3,5,6) (2,5,7,8) (0,2,3,4,5,7,9) (1,2,3,4,5,7,8,9) (1,2,3,4,5,6) (0,1,2,5,6,8) (0,1,2,4,5,6,7,8) (0,1,2,5) (0,1,2,4,6,7,8,9) {82,105,103,33,55,85,74,77,79,37}

     

       68
       +
       [#.#.#.##.] (1,2,3,4,5,6,7) (1,6,8) (2,3,5) (5,6) (1,2,4,6,7) (0,1,2,7,8) (0,2,3,4,5,7,8) (0,1,3,4,5,6,8) {37,45,79,49,42,52,30,59,40}

     

       69
       +
       [#...##.] (0,2,3,4,5) (0,3,6) (0,4,5) (1,3,5,6) (1,2,4,5) (4,6) (0,2,3,4,5,6) {27,18,22,34,33,29,45}

     

       70
       +
       [#..##.#.] (0,1,4) (0,5,7) (1,2,4,5,6) (2) (0,5) (3,4,6,7) (0,2,3,4,6) {24,171,185,10,181,178,176,7}

     

       71
       +
       [#..#.##.] (0,3,4,6) (4,6) (0,4,5) (1,2,3,4,5,7) (0,1,2,3,6) (0,1,2,4,6,7) (1,2,3) (1,2,3,4) {62,61,61,57,84,21,65,22}

     

       72
       +
       [#.#.##.] (0,1,2,4,5) (3,6) (1,2,4,5,6) (1,3,5,6) (0,1,6) (1,2) {16,149,136,27,17,25,38}

     

       73
       +
       [#.#.#..#.#] (0,3,6,7,9) (0,2,3,5,6,7,8,9) (3,6,8) (0,2,5,6,9) (2,3,4,7) (0,1,2,4,5,6,7,8) (0,1,3,4,5,6,7,9) (0,1,2,3,7,9) (5,8,9) (2,5,8,9) (3) {54,41,64,92,37,43,52,67,47,59}

     

       74
       +
       [##..#.] (3,4,5) (1,5) (1,2,4) (1,4) (1,2) (0,3,5) (0) {23,47,31,10,33,12}

     

       75
       +
       [#..##.#] (2,4) (1,3,4,5) (0,1,5,6) (0,2,4,5,6) (0,1,4,5,6) {47,41,24,12,55,59,47}

     

       76
       +
       [#.#.##.#] (0,1,2,4,5,7) (0,2,3,6,7) (0,3,4,5) (3,4,5,6) (0,1,3,5,6,7) (1,2,4,5,6,7) (0,2,3) (2,4,5,6,7) (1,7) {32,34,35,34,44,47,32,42}

     

       77
       +
       [..#.#....#] (0,2,3,5,6,7,8,9) (1,3,4,5,6,7,8,9) (0,2,7,8,9) (5,6,9) (3) (0,1,4,5,9) (1,5,9) (0,1,2,3,4,5,8) (2,5) (4,8) {26,38,191,38,31,233,23,8,24,46}

     

       78
       +
       [.#....#.#.] (2,3,4,8) (0,1,2,5,6,7,9) (0,2,3,4,7,8,9) (0,2,3,5,6,7,8,9) (1,3) (4,5,6,9) (0,3,4,5,6,7,8) (0,8,9) (3,4,5,7,8,9) (0,1,2,3,4,6,8,9) (1,2,5,6,7,8,9) (3,4,5) {70,55,62,73,59,77,79,59,69,100}

     

       79
       +
       [#...###...] (0,3,6,9) (5,8,9) (1,2,3,4,6,8,9) (1,2,5,7) (0,1,2,3,4,6,7,8) (1,2,3,4,6,7,8,9) (3,5) (1,5,6,7,8,9) (4,5,6) (1,2,3,4,5,6,7,9) {33,65,60,67,57,30,75,48,63,62}

     

       80
       +
       [#.##] (1,2) (0,1) (0,2,3) {8,22,16,1}

     

       81
       +
       [##..##] (1,2,5) (0,1,2,3,5) (0,3,4) (0,2,4) {20,11,21,10,17,11}

     

       82
       +
       [.#.#] (1,3) (0,2) (0,3) {21,10,9,22}

     

       83
       +
       [#..##.##] (0,1,2,3,4,6,7) (3,4,7) (2,3,7) (2,3,4,5,7) (2,3,5,6) (2,3,6,7) (3,4) (1,3,7) (0,4,5,6) (2,3) {3,14,61,108,49,34,27,62}

     

       84
       +
       [########..] (0,2,3,4,9) (0,3,6,7,8,9) (0,1,2,3,4,5,6,7) (4,5,7,9) (0,1,2,3,4,7,8,9) (0,2,3,4,6,7,8,9) (1,3,5,6,8,9) (0,1,4,5,8,9) (0,2,3) (1,8) (0,5,8) {58,39,41,60,41,33,38,48,46,47}

     

       85
       +
       [#..#.#..#] (0,3,6,7) (3,4,6,7) (0,2,5) (0,5,8) (0,6) (0,1,2,3,4,5,7,8) (1,3,4,6,7,8) (0,3,5,8) (4,7) (0,1,3,4,7,8) {49,22,13,36,43,26,47,47,35}

     

       86
       +
       [.#.....] (1,2,3,4,5) (1,2,3,4) (1,2,3,4,6) (0,2,4,6) (0,1,2,4,5) {6,29,33,27,33,18,8}

     

       87
       +
       [##.###.#.#] (0,2,5,6,8) (1,2,3,4,5) (0,2,3,5,7,8,9) (0,1,2,4,5,6,9) (2,3,6,7,9) (0,1,2,3,4,5,7,9) (0,2,9) (2,3,4,7,9) {38,39,69,47,42,56,30,28,17,39}

     

       88
       +
       [..##.#.] (0,1,3,4,5) (2,5) (0,1,4,5) (1,4,6) (0,3,4) {128,128,12,21,142,126,14}

     

       89
       +
       [###.] (1,3) (0,2,3) (3) (0,1) (2) (1) {24,41,14,44}

     

       90
       +
       [##.##...] (0,1,4,6,7) (0,1,3,4) (4,6) (0,2,3,4) (6,7) (3,5,6) (0,2,3,5,7) {38,20,18,31,42,23,54,42}

     

       91
       +
       [#.#..] (0,2,3) (3,4) (0,3) (4) (1,2) (0,1) {42,175,174,42,14}

     

       92
       +
       [.#######] (0,2,6) (0,1,2,3,5,6) (1,7) (2,4,5,6,7) (1,2,4,5) (2,3,4,5,6) {2,8,22,7,20,20,22,21}

     

       93
       +
       [.#.###.###] (3,7,8) (0,8,9) (1,2,3,4,5,7,8,9) (0,1,2,3,5,6,9) (0,1,2,3,4,6,7) (0,1,2,3,5,6,8,9) (0,4,6,8) (0,1,2,4,8,9) (0,1,5,8) {191,63,54,46,150,41,166,15,177,48}

     

       94
       +
       [#.#.] (1,2,3) (0,2) {11,14,25,14}

     

       95
       +
       [#...] (0,3) (1,2,3) (3) (0,1,2) (2) (0,2) {7,7,14,22}

     

       96
       +
       [....##..] (5,7) (0,6) (2,7) (1,2,3,5,6,7) (0,3,4,5,6,7) (0,1,3,5,7) (1,4) (0,1,2,3,5,7) (0,1,2,3,4,5,7) {37,30,22,26,13,31,14,31}

     

       97
       +
       [#...##....] (0,2,7) (2,5) (0,1,4,5,6,9) (0,1,6,7,8,9) (0,2,3,4,5,7,8) (0,2,3,4,5) (1,2,3,5,6,7,8) (0,1,2,6) (1,2,4,6) (3,8,9) {76,83,91,53,48,56,83,51,57,48}

     

       98
       +
       [#.##.####] (0,1,3,4,6,7,8) (0,2,3,5,6,7,8) (2,4) (2,3,4,5,6,7,8) (0,1,3,4,5,7,8) (5,6) (2,3,6,7,8) {31,27,50,68,55,45,60,68,68}

     

       99
       +
       [..#....##] (0,1,4,5,6,7,8) (0,4,6,7,8) (1,3,4,5,7,8) (1,2,6,7,8) (0,2,3,4,8) (1,2,4,5) (0,4,5,6,7) (0,1,3,4,6,7,8) {52,52,40,41,71,35,43,53,68}

     

       100
       +
       [.#.#] (1,3) (0,2) {19,106,19,106}

     

       101
       +
       [.#.#] (0,3) (1,2,3) (1,2) (2) (0,1,3) {20,44,28,31}

     

       102
       +
       [####.] (0,2,4) (1,2) (0,1,2,3) (0,2,3,4) (1) {134,128,137,125,10}

     

       103
       +
       [###...##] (0,4,5,6,7) (0,1,2,5) (1,4,5,7) (0,1,5) (2,3,4,7) (0,2,5,6,7) (0,2,3,6) (1,3,5) (0,1,2,3,6,7) (1,2,4,5,6) {201,193,197,35,42,211,32,55}

     

       104
       +
       [..#.##] (2,3,4,5) (0,1,2,3,5) (1,4) (0,1) (0,3,4) (0,3,5) {29,31,12,23,24,17}

     

       105
       +
       [#..#] (2) (0,1) (0,1,2) (1,2) (3) (0,1,3) {23,25,25,20}

     

       106
       +
       [.##.##..#.] (2,4,9) (0,1,3,4,5,6,8,9) (2,4,5,6,7) (1,2,3,4,6,7,8,9) (0,4,5,7,8) (0,3,4,6,7,8,9) (1,2,4,5,6,7,9) (0,3,4,5,6,7,8) {17,16,30,28,47,16,41,41,28,36}

     

       107
       +
       [#..#.#] (0,3,5) (1,3,4) (1,3,5) (0,2,3,5) (4,5) {24,173,9,197,12,209}

     

       108
       +
       [..#.#] (0,1,3,4) (1,2,3) (0,1,2,4) (0,2,3) {160,25,158,146,22}

     

       109
       +
       [###..###] (1,2,4,5,7) (0,2,3,5,7) (0,3,4,5,6,7) (1,2,6,7) (0,1) (1,2,4,7) (3,4,5,7) (0,2,3,5,6,7) {46,41,57,45,49,65,42,79}

     

       110
       +
       [#.##] (1,2,3) (2,3) (0,2,3) {14,1,18,18}

     

       111
       +
       [.##.######] (1,2,3,4,5) (0,2,7) (0,2,4,5,6,7,8,9) (6,8,9) (0,1,3,4,6,8,9) (5) (5,6,9) (0,1,4,5,7,8,9) (0,2,3) (0,1,2,6,7,8,9) (1,2,5,6,7,8,9) {58,38,41,16,30,38,65,43,58,72}

     

       112
       +
       [.#...##.#] (0,1,2,3,4,6,7,8) (0,2,3,4,5,7) (0,1,5,6) (0,2,3,4,5,6,7) (0,1,2,6,7,8) (2,3,4,5,7) (0,2,4,7) (3,5,8) {220,14,230,224,217,223,32,230,32}

     

       113
       +
       [####..#..] (0,2,5) (3,4) (0,2,4,5) (0,4,5,7) (0,2,4,5,6,8) (0,1,5,8) (0,1,2,6,7) (0,1,3,4,5,7,8) (0,1,4,5,6) (0,2,3,4,5,6,8) (0,4,5,7,8) {302,229,63,40,99,283,47,64,243}

     

       114
       +
       [...#.#.] (0,2,3,4,5) (3,4,5,6) (0,1,3,4,6) (3,4,5) (1,2,3,4,6) (0,3,6) (0,2,5) (0,1,5) (0,2,4,5,6) {87,25,61,70,76,80,58}

     

       115
       +
       [###......] (0,1,3,6,7,8) (3,6) (2,3,4,5,6,7) (0,4,8) (1,5,6,8) (0,1,3,4,6,7) (0,1,2,4,6,7,8) (1,2) (1,2,6) {145,188,47,160,29,35,188,157,156}

     

       116
       +
       [...##.#] (3,4,6) (0,1,3,4,6) (0,2,3,6) (3) (0,6) (4,5,6) (0,1,2,4,5) (0,3,5) (1,4,5,6) {38,26,19,40,39,21,35}

     

       117
       +
       [####..##] (0,1,2,4,7) (1,6) (0,1,3,6) (0,7) (2,6) (0,1,3) (1,2,4,7) (3,5,6,7) {28,38,208,23,24,12,210,43}

     

       118
       +
       [.#.....] (0,1) (0,3,4,6) (2,3,4,6) (4,5,6) (1,2,4,5,6) (0,1,3,4,5) (3,4,6) {44,44,23,55,83,47,64}

     

       119
       +
       [#.#.##....] (0,1,2,3,7,8) (2,4,5,7,8) (0,1,3,4,8,9) (0,5,7,9) (3,4) (0,1,2,3,4,5,8,9) (0,1,2,3,4,5,6,7,9) (0,2,3,4,6,8,9) {48,26,154,61,184,135,23,130,167,47}

     

       120
       +
       [##.#######] (2,3,5,6,8,9) (0,5,9) (1,2,9) (0,2,3,4,5,6,7,8) (2,6,8) (0,3,5,6) (0,1,2,3,4,5,7,9) (3,4,9) (0,2,5,6,8) (3,7) {35,17,158,154,7,167,147,13,141,171}

     

       121
       +
       [#.##.#..] (0,3) (0,2,4) (1,2,3,5,6) (0,1,2,3,6) (1,2,3,4,5,7) (2,3) (3,4) (2,3,4,7) (0,1,2,7) (0,1,6,7) {72,60,68,67,41,16,39,45}

     

       122
       +
       [###..] (3) (1,2,3) (0,1,2,3) (3,4) (0,1,4) (0,3,4) (0,2) {37,26,24,34,18}

     

       123
       +
       [...#...###] (2,3,5) (0,3,4,5,6,9) (3,6) (2,8) (0,1,4,5,6,7,9) (1,3) (0,1,3,4,5,6,7,8,9) (5,7,9) (0,2,4,8) {50,36,32,66,50,63,46,33,22,48}

     

       124
       +
       [#..#] (0,1,3) (0,2,3) (1) (1,2) {16,181,165,16}

     

       125
       +
       [#.#.] (0,2) (0,1,3) {19,15,4,15}

     

       126
       +
       [##.####] (0,1,3) (0,4,5,6) (0,1,3,4,5,6) (0,2,4,5,6) (0,1,2,4,5,6) (2,3,4) {28,18,38,24,43,24,24}

     

       127
       +
       [#..#..] (0,3) (1,2,3,4) (1,2,4,5) (0,1,2,3,4,5) {19,227,227,33,227,213}

     

       128
       +
       [#.##] (1,2,3) (0,1) (1,2) (2,3) {17,49,32,12}

     

       129
       +
       [.#.##] (0,1,3) (3,4) (2) (0,2,4) {16,13,20,28,18}

     

       130
       +
       [##..] (2) (0) (3) (0,2) (1,3) (0,2,3) {15,15,33,31}

     

       131
       +
       [.##.#.###.] (1,6,8) (6,7) (0,1,2) (1,5,6,7,9) (2,3,4,5,6,8,9) (7,8) (2,4,5,6,7,8) (3,6,7,9) (0,1,3,5,6,7,8,9) (1,2,3,5,6,7) (0,2,5,6,8,9) (0,2,3,4,5,8,9) {19,59,26,37,9,46,82,69,41,50}

     

       132
       +
       [#.#...#] (0,1,4,6) (0,3) (3,6) (1,2,4,5,6) (0,1,5) (1,4,5,6) (0,1,2,3,5) (0,1,4,5,6) (1,3,4,6) {51,67,24,33,42,59,42}

     

       133
       +
       [####] (1,3) (0,1,2,3) {12,16,12,16}

     

       134
       +
       [.#.#.] (0,2,3) (0,3,4) (0,1) (0,2) (0,3) (3) (0,1,2) {58,8,27,181,16}

     

       135
       +
       [..#....] (2,3) (2,6) (2,3,5) (0,1,3,4,5) (4,6) (0,3,5,6) (0,6) (1,2,4,5,6) {19,26,59,29,26,44,49}

     

       136
       +
       [##..] (0,1,3) (3) (0) (0,1,2) {35,28,10,25}

     

       137
       +
       [#..##.#] (0,2,3) (1,4) (1,2,3,5,6) (0,4) (2,3) (0,3,4) (4,6) (0,2,4,5,6) (0,3,4,6) {62,8,36,54,72,20,49}

     

       138
       +
       [##..##...] (0,2,3,4,8) (0,1,8) (0,1,3,4,5,6,7,8) (0,3,4,5,6,7,8) (2,5,7,8) (0,1,2,3,6,8) (0,6,7) (3,5,8) (2,7) {57,32,170,62,35,43,37,178,72}

     

       139
       +
       [.##...#] (0,2,3,5) (1,2,3,4,5) (0,1,2,5) (0,1,4,6) (0,5,6) {52,33,32,15,16,38,21}

     

       140
       +
       [....#.] (0,2,3) (0,2) (3,5) (0,1,2,3,5) (1) (3,4) {12,17,12,24,5,17}

     

       141
       +
       [....#..#..] (2,6) (0,2,3,4,5,6,7,8) (0,1,3,7,8,9) (3,4,9) (0,1,2,3,4,5,6,9) (1,3,5,7,8,9) (0,2,3,4,6,7,9) (0,1,8) (1,3,4,8) (0,1,3,4,6,7,8,9) {41,47,28,70,62,27,43,32,44,52}

     

       142
       +
       [#.##.#.] (1,2,4,6) (1,2,3,4) (0,2,3,5,6) (0,2) (0,1,3,4,6) {28,18,46,29,18,20,29}

     

       143
       +
       [##..#.] (1,2,4,5) (5) (0,2) (0,1,2,4) (0) (4,5) (1,3,4,5) (3,4,5) {33,34,37,192,225,221}

     

       144
       +
       [##...##.] (0,3,4) (2,5) (1,4) (2,4,6) (0,1,3,7) (0,2,4,6,7) {164,10,193,10,185,20,173,158}

     

       145
       +
       [.......#] (4,5) (1,2,4,7) (0,5,7) (1,4) (1,2,3,4,5,6,7) (1,2,3,4,5,7) (0,3,5,6,7) (0,1,2,5,6,7) {44,63,52,44,62,80,38,85}

     

       146
       +
       [####..#.##] (0,3,5,8,9) (0,2,9) (1,3,5,6,7,8,9) (7,8) (0,2,3,4,5,8,9) (4,8,9) (0,1,3,4,5,6,7,9) (0,1) (0,1,2,3,4,5,7,9) (0,2,4,5,6,7) (1,3,6,8) (0,1,4,9) (4,6) {178,69,47,175,63,177,53,67,149,185}

     

       147
       +
       [.##..####] (3,4,6) (0,3,4,5,6,7,8) (4,5,8) (0,1,2,3,5,6,7,8) (4,5) (1,2,4,7) (6) (1,3,7,8) {29,40,24,62,75,62,54,55,61}

     

       148
       +
       [##.###.] (0,1,2,3,4) (0,3,6) (0,3,5,6) (3,5) (0,4) (0,1,3,4,5) {249,205,200,242,214,25,35}

     

       149
       +
       [##....##] (1,3,4,6) (1,2,4,5,6,7) (0,1,3,4,5,7) (0,1,2,3,5,6) (2,3,4,5,6,7) (0,3,4,6,7) (0,4,5) {43,37,32,45,52,55,46,22}

     

       150
       +
       [##....###.] (2,6,8,9) (3,9) (2,4,6) (5,6,7) (4,7) (0,1,2,3,7) (2) (1,5,6,9) (0,1,3,6,8,9) (3,4,5,6) (1,2,3,4,5,6,8) (0,1,3,4,6,8) (9) {37,51,76,53,52,23,82,42,55,55}

     

       151
       +
       [..##.] (2,3) (0,2,3,4) (1,3,4) (1,2,3,4) {8,18,34,37,26}

     

       152
       +
       [##.#....#] (2,5) (0,1,2,5,8) (3,4,5,6,8) (1,2,3,4,6,7,8) (0,1,3,4,5,6,8) (1,4,7) (2,3,5,7,8) (1,2,3,5,7) {29,65,46,36,47,40,32,38,54}

     

       153
       +
       [###.#.#] (2,5) (0,4) (2,3) (1,2) (2) (0,3,6) (0,2,6) (0,3) (0,1,4,5,6) {88,25,56,42,38,32,51}

     

       154
       +
       [#..###.##] (0,1,4,5,6) (0,1,3,4,5,6,7,8) (0,1,2,7,8) (1,2,3,4,5) (0,3,8) (1,3,4,5,6,7) (4,6) (0,1,3,5,6,7) (8) (0,2,3,4,5,6,7) (1,7) {175,196,12,182,43,176,171,187,52}

     

       155
       +
       [.#.###..] (2,4,5) (2,6,7) (2,4,5,6,7) (3,4) (0,3,4,5,7) (1,2,3,4,5,7) (5) (2,5,6) (1,3,4,5,6,7) (0,2,4,6,7) {14,25,37,189,194,64,34,47}

     

       156
       +
       [.##.] (0,1) (0,2,3) (0,1,2) (1,2) {35,31,38,20}

     

       157
       +
       [#.#...#] (0,1,4,5) (1,2,4) (0,1,4,6) (1,2,4,5,6) (0,2,6) (1,2,3) (3,4) {42,60,34,19,63,35,39}

     

       158
       +
       [.###...] (4) (0,2,3,4,6) (0,1,2,3,4,5) (0,2,4,5,6) (0,1,3,4,5) (1,2,3) {37,35,20,36,44,36,3}

     

       159
       +
       [#.#..] (0,3) (2,3) (3,4) (0,3,4) (2,4) (0,1,3) {200,3,39,227,212}

     

       160
       +
       [#.#.#...] (2) (1,7) (0,3,4,6) (3) (1,4,5,6,7) (0,2,3,5,6) {33,211,25,52,29,30,46,211}

     

       161
       +
       [....##] (0,1,4,5) (0,1,5) (2,3,4) (1,3) (0,1,3) (1,2,5) (0) (1,2,3,4) {36,41,20,34,21,16}

     

       162
       +
       [.##.###.#.] (0,2,3,4,9) (1,7) (1,2,3,5,6,7,8,9) (0,1,2,4,5,7,9) (3,4,5,6,7) (4,6) (2) (0,1,2,3,6,7,9) (0,6,7,8,9) {138,163,164,156,25,29,162,172,22,157}

     

       163
       +
       [..#.#.] (0,1,2,4,5) (0,2,3) (0,2,5) (0,4,5) {53,2,34,19,21,34}

     

       164
       +
       [#...##] (1,2,3,4) (0,3,5) (1,5) (0,1,4,5) (0,2,3,4,5) (0,2,3) (0,1,2,3) {32,41,28,39,15,30}

     

       165
       +
       [##.###..] (0,2,5,6) (0,5,6,7) (4,5,7) (1,3,6,7) (0,2,5,7) (1) (3,4,6,7) (0,6) (1,2,3,5) {30,45,38,45,35,55,43,64}

     

       166
       +
       [.#.#..#...] (3,7) (0,4,5,9) (3,4,6,8) (0,1,2,3,5,6,8,9) (2,3,4,5,6,7,8,9) (8,9) (0,1,2,3,4,6,8) (0,1,2) (0,1,2,4,5,7,8,9) (0,1,3,4,6) (0,1,3,7,9) (0,1,6,7,8,9) {263,243,67,237,236,61,224,76,91,99}

     

       167
       +
       [.##.##] (0,2,3,5) (1) (0,1,2,4,5) (4,5) (1,3) (0) (0,2,3) {44,31,42,42,15,35}

     

       168
       +
       [###.] (1,3) (1,2) (0,2) (2) (2,3) {9,155,45,146}

     

       169
       +
       [#.#...#.#.] (0,1,2,5,6) (0,1,2,5,7) (1,2,4,5,6) (0,1,3,5,7,8,9) (2,3,4,5,6,8) (4,6) (0,1,2,3,4,5,6,8) (0,3,4,5,9) (5,6,7,8) (1,4,6,7,8) (2,3,8,9) (2,3,4,9) (0,1,2,4,5,7,8) {76,79,96,73,82,86,58,63,80,61}

     

       170
       +
       [...###] (0,3,4) (3,4,5) (0,1,4,5) (0,2,3,4) {34,10,10,32,42,18}

     

       171
       +
       [..##.] (1,2,4) (0,2,3) (2,3) {17,7,28,21,7}

     

       172
       +
       [.###] (1,2,3) (0,2) {4,19,23,19}

     

       173
       +
       [###.] (2,3) (0,1,3) (0,1) (1,2) {15,32,30,26}

     

       174
       +
       [..#.#.] (0,2,4) (3,4) (0,1,2,4,5) (0,1,3) (1,2,3,5) {37,29,33,31,48,21}

     

       175
       +
       [###..###] (1,3,6) (0,1,2,3,4,5,7) (0,2,4,5,6,7) (1,2,6) (0,3,6) (1,5,7) {27,26,20,16,20,37,36,37}

     

       176
       +
       [.##.] (2,3) (1,2) (0,3) {14,1,1,14}

     

       177
       +
       [.#.##...#] (3,4,5,6,8) (1,2,3,6,7,8) (1,2,3,5,6,7) (3,7) (2,3,4,5,6,7,8) (0,1,2,8) (0,3,4,5,7,8) {153,46,47,212,158,173,51,196,189}

     

       178
       +
       [#.###.] (0,1,4,5) (0,1,2,5) (1,2,3) (1,2,3,4,5) (0,2,3,5) (0,3,4) (1,2) (2,3,4,5) {220,54,54,223,212,30}

     

       179
       +
       [#.####] (1,2,3,5) (0,1,5) (1,2,3,4) (0,2,3,4) (2,3) {21,25,36,36,20,14}

     

       180
       +
       [...#....##] (0,9) (4,5,6) (0,2,4,6,7,9) (0,2,3,4,7,8,9) (0,1,4,7) (0,3,7,8) (8,9) (0,7,8) (0,1,2,5,6,7) {65,26,36,8,49,35,47,46,18,49}

     

       181
       +
       [.####.##] (1,2,3,5,6,7) (0,1,3,4,6,7) (1,2,3,4,5,6) (0,2,4,7) (1,3,5) (3,4,5,6,7) (4,7) (0,1,4,6,7) (0,7) {19,35,12,42,55,27,40,46}

     

       182
       +
       [.#.###] (0,2,3,5) (1,3,4,5) (0,1,2,4) (1,5) (1,2,3,5) {29,50,39,38,35,43}

     

       183
       +
       [..#..##.#] (2,3,8) (1,5) (1,4,5,6,7,8) (1,3,4,5,7,8) (2,3,4,5,7) (0,1,3,4) (0,1,3,4,6) (0,2,3,4,5,7,8) {28,173,36,70,64,171,30,46,60}

     

       184
       +
       [.##.] (1) (0,2,3) (1,2) {3,11,10,3}

     

       185
       +
       [#.#....##] (1,2,3,8) (1,2,3,4,5) (0,1,3,7) (0,1,2,3,6,7) (0,1,2,3,7,8) (4) (1,2,3,4,5,7,8) {27,49,45,49,31,19,6,42,35}

     

       186
       +
       [##..] (1) (0,1,2) (2,3) (0) {22,19,28,9}

     

       187
       +
       [##..###] (1,2,3,4,5) (2,3,4,5) (0,2,4,5) (1,4) (0,2,4) (3) (0,1,3,6) (1,3,6) {37,171,27,179,33,24,158}

     

       188
       +
       [.####.] (1,2,3,4) (0,4) (0,1,3) (1,2,3) (2,3,4,5) (1,2,3,4,5) (0,2) {44,38,47,45,44,21}

     

       189
       +
       [.##.#...#] (1,6,8) (2,3,4,5,8) (0,1,2,3,6,8) (0,2,3,4,7,8) (5,7) (0,1,2,3,4,5,8) (1,3,4,5) (0,1,4) (1,2,3,6,7,8) (4,5,6,7) (0,1,2,4,5,6,8) {59,172,61,70,85,56,141,54,164}

     

       190
       +
       [.##......] (7,8) (3,5) (1,2) (1,3,5,6,8) (2,3,4,5,6) (0,4,7,8) (2,4) (1,2,3,4,5,6,7) {4,35,43,56,44,56,47,41,33}

     

       191
       +
       [#....#....] (0,1,2,3,4,5,7,8,9) (2,4,5,9) (3,5,6) (3,9) (0,3,5,9) (0,1,4) (0,1,3,5,6,8) (0,1,2,4,5,6,7,8) (0,2,5,6,7,8,9) (0,1,3,6,8,9) (4,6,8) {217,50,191,56,54,220,203,176,191,209}

     

       192
       +
       [.#..#.] (0,2,4) (1,3) (1,3,5) (1,2,3,5) (0,1,2,3) (3) (0,3,4,5) {145,21,28,151,139,132}

     

       193
       +
       [#..###] (3,4) (2) (1,3,5) (1,2,3,5) (0,1,2) (0,2,4,5) (0,2,3,4) (0,2,3) {42,19,63,44,38,13}

     

       194
       +
       [#.#......] (0,2,4,6,7) (0,3,4,6,8) (0,3,4,5,8) (0,1,4,6) (2,4,5) (2,3,5) (1,3,5,7) (3,8) {32,17,39,53,46,56,18,25,25}

     

       195
       +
       [###......#] (0,1,2,5) (5,6,9) (0,2,8,9) (0,2,3,5) (2) (0,1,2,3,4,5,6,7) (0,1,2,3,5,6,7,9) (7) (0,3,4) {73,56,84,44,19,78,52,49,9,44}

     

       196
       +
       [#.##] (1,2) (2) (0,1,3) (0,1,2) {21,27,190,4}

     

       197
       +
       [...#..#.##] (0,2,3,4,6,7,8,9) (0,2,3,4,8,9) (0,1,2,5,6,8,9) (2,3) (0,1,2,5,6,7,8) (1,2,5,8) (0,1,2,3,5,7,8,9) (2,7) (0,3,8,9) (2,4,9) {36,32,70,37,11,32,14,33,37,42}

+934

vis/10/generate.ts

···

       1
       +
       const scriptDir = import.meta.dir;

     

       2
       +
       const file = await Bun.file(`${scriptDir}/../../shared/10/input.txt`).text();

     

       3
       +
       

     

       4
       +
       interface Machine {

     

       5
       +
       	target: boolean[];

     

       6
       +
       	buttons: number[][];

     

       7
       +
       	joltages: number[];

     

       8
       +
       }

     

       9
       +
       

     

       10
       +
       // Parse input

     

       11
       +
       const machines: Machine[] = file

     

       12
       +
       	.trim()

     

       13
       +
       	.split("\n")

     

       14
       +
       	.map((line) => {

     

       15
       +
       		const lightsMatch = line.match(/\[([.#]+)\]/);

     

       16
       +
       		const target = lightsMatch![1].split("").map((c) => c === "#");

     

       17
       +
       

     

       18
       +
       		const buttonsMatch = line.matchAll(/\(([0-9,]+)\)/g);

     

       19
       +
       		const buttons: number[][] = [];

     

       20
       +
       		for (const match of buttonsMatch) {

     

       21
       +
       			const indices = match[1].split(",").map(Number);

     

       22
       +
       			buttons.push(indices);

     

       23
       +
       		}

     

       24
       +
       

     

       25
       +
       		const joltagesMatch = line.match(/\{([0-9,]+)\}/);

     

       26
       +
       		const joltages = joltagesMatch ? joltagesMatch[1].split(",").map(Number) : [];

     

       27
       +
       

     

       28
       +
       		return { target, buttons, joltages };

     

       29
       +
       	});

     

       30
       +
       

     

       31
       +
       // Solve one machine

     

       32
       +
       function solveMachine(machine: Machine): { solution: number[]; steps: any[] } {

     

       33
       +
       	const n = machine.target.length;

     

       34
       +
       	const m = machine.buttons.length;

     

       35
       +
       

     

       36
       +
       	const matrix: number[][] = [];

     

       37
       +
       	for (let i = 0; i < n; i++) {

     

       38
       +
       		const row: number[] = [];

     

       39
       +
       		for (let j = 0; j < m; j++) {

     

       40
       +
       			row.push(machine.buttons[j].includes(i) ? 1 : 0);

     

       41
       +
       		}

     

       42
       +
       		row.push(machine.target[i] ? 1 : 0);

     

       43
       +
       		matrix.push(row);

     

       44
       +
       	}

     

       45
       +
       

     

       46
       +
       	const steps = [JSON.parse(JSON.stringify(matrix))];

     

       47
       +
       	const pivotCols: number[] = [];

     

       48
       +
       

     

       49
       +
       	for (let col = 0; col < m; col++) {

     

       50
       +
       		let pivotRow = -1;

     

       51
       +
       		for (let row = pivotCols.length; row < n; row++) {

     

       52
       +
       			if (matrix[row][col] === 1) {

     

       53
       +
       				pivotRow = row;

     

       54
       +
       				break;

     

       55
       +
       			}

     

       56
       +
       		}

     

       57
       +
       

     

       58
       +
       		if (pivotRow === -1) continue;

     

       59
       +
       

     

       60
       +
       		const targetRow = pivotCols.length;

     

       61
       +
       		if (pivotRow !== targetRow) {

     

       62
       +
       			[matrix[pivotRow], matrix[targetRow]] = [

     

       63
       +
       				matrix[targetRow],

     

       64
       +
       				matrix[pivotRow],

     

       65
       +
       			];

     

       66
       +
       			steps.push(JSON.parse(JSON.stringify(matrix)));

     

       67
       +
       		}

     

       68
       +
       

     

       69
       +
       		pivotCols.push(col);

     

       70
       +
       

     

       71
       +
       		for (let row = 0; row < n; row++) {

     

       72
       +
       			if (row !== targetRow && matrix[row][col] === 1) {

     

       73
       +
       				for (let c = 0; c <= m; c++) {

     

       74
       +
       					matrix[row][c] ^= matrix[targetRow][c];

     

       75
       +
       				}

     

       76
       +
       				steps.push(JSON.parse(JSON.stringify(matrix)));

     

       77
       +
       			}

     

       78
       +
       		}

     

       79
       +
       	}

     

       80
       +
       

     

       81
       +
       	// Identify free variables

     

       82
       +
       	const isPivot = new Array(m).fill(false);

     

       83
       +
       	pivotCols.forEach((col) => (isPivot[col] = true));

     

       84
       +
       	const freeVars: number[] = [];

     

       85
       +
       	for (let j = 0; j < m; j++) {

     

       86
       +
       		if (!isPivot[j]) freeVars.push(j);

     

       87
       +
       	}

     

       88
       +
       

     

       89
       +
       	// Try all combinations of free variables to find minimum

     

       90
       +
       	let minPresses = Infinity;

     

       91
       +
       	let bestSolution: number[] = [];

     

       92
       +
       

     

       93
       +
       	const numCombinations = 1 << freeVars.length;

     

       94
       +
       	for (let combo = 0; combo < numCombinations; combo++) {

     

       95
       +
       		const solution: number[] = new Array(m).fill(0);

     

       96
       +
       

     

       97
       +
       		// Set free variables according to combo

     

       98
       +
       		for (let i = 0; i < freeVars.length; i++) {

     

       99
       +
       			solution[freeVars[i]] = (combo >> i) & 1;

     

       100
       +
       		}

     

       101
       +
       

     

       102
       +
       		// Back-substitution for pivot variables

     

       103
       +
       		for (let i = pivotCols.length - 1; i >= 0; i--) {

     

       104
       +
       			const col = pivotCols[i];

     

       105
       +
       			solution[col] = matrix[i][m];

     

       106
       +
       

     

       107
       +
       			for (let j = col + 1; j < m; j++) {

     

       108
       +
       				if (matrix[i][j] === 1) {

     

       109
       +
       					solution[col] ^= solution[j];

     

       110
       +
       				}

     

       111
       +
       			}

     

       112
       +
       		}

     

       113
       +
       

     

       114
       +
       		const presses = solution.reduce((sum, x) => sum + x, 0);

     

       115
       +
       		if (presses < minPresses) {

     

       116
       +
       			minPresses = presses;

     

       117
       +
       			bestSolution = solution;

     

       118
       +
       		}

     

       119
       +
       	}

     

       120
       +
       

     

       121
       +
       	return { solution: bestSolution, steps };

     

       122
       +
       }

     

       123
       +
       

     

       124
       +
       // Solve Part 2: joltage configuration

     

       125
       +
       function solveMachinePart2(machine: Machine): number[] {

     

       126
       +
       	const n = machine.joltages.length;

     

       127
       +
       	const m = machine.buttons.length;

     

       128
       +
       	const target = machine.joltages;

     

       129
       +
       

     

       130
       +
       	// Build coefficient matrix A

     

       131
       +
       	const A: number[][] = [];

     

       132
       +
       	for (let i = 0; i < n; i++) {

     

       133
       +
       		const row: number[] = [];

     

       134
       +
       		for (let j = 0; j < m; j++) {

     

       135
       +
       			row.push(machine.buttons[j].includes(i) ? 1 : 0);

     

       136
       +
       		}

     

       137
       +
       		A.push(row);

     

       138
       +
       	}

     

       139
       +
       

     

       140
       +
       	// Build augmented matrix [A | b]

     

       141
       +
       	const matrix: number[][] = [];

     

       142
       +
       	for (let i = 0; i < n; i++) {

     

       143
       +
       		matrix.push([...A[i], target[i]]);

     

       144
       +
       	}

     

       145
       +
       

     

       146
       +
       	// Gaussian elimination

     

       147
       +
       	const pivotCols: number[] = [];

     

       148
       +
       	for (let col = 0; col < m; col++) {

     

       149
       +
       		let pivotRow = -1;

     

       150
       +
       		for (let row = pivotCols.length; row < n; row++) {

     

       151
       +
       			if (matrix[row][col] !== 0) {

     

       152
       +
       				pivotRow = row;

     

       153
       +
       				break;

     

       154
       +
       			}

     

       155
       +
       		}

     

       156
       +
       

     

       157
       +
       		if (pivotRow === -1) continue;

     

       158
       +
       

     

       159
       +
       		const targetRow = pivotCols.length;

     

       160
       +
       		if (pivotRow !== targetRow) {

     

       161
       +
       			[matrix[pivotRow], matrix[targetRow]] = [

     

       162
       +
       				matrix[targetRow],

     

       163
       +
       				matrix[pivotRow],

     

       164
       +
       			];

     

       165
       +
       		}

     

       166
       +
       

     

       167
       +
       		pivotCols.push(col);

     

       168
       +
       

     

       169
       +
       		// Scale row so pivot is 1

     

       170
       +
       		const pivot = matrix[targetRow][col];

     

       171
       +
       		for (let c = 0; c <= m; c++) {

     

       172
       +
       			matrix[targetRow][c] /= pivot;

     

       173
       +
       		}

     

       174
       +
       

     

       175
       +
       		// Eliminate column in other rows

     

       176
       +
       		for (let row = 0; row < n; row++) {

     

       177
       +
       			if (row !== targetRow && matrix[row][col] !== 0) {

     

       178
       +
       				const factor = matrix[row][col];

     

       179
       +
       				for (let c = 0; c <= m; c++) {

     

       180
       +
       					matrix[row][c] -= factor * matrix[targetRow][c];

     

       181
       +
       				}

     

       182
       +
       			}

     

       183
       +
       		}

     

       184
       +
       	}

     

       185
       +
       

     

       186
       +
       	// Identify free variables

     

       187
       +
       	const isPivot = new Array(m).fill(false);

     

       188
       +
       	pivotCols.forEach((col) => (isPivot[col] = true));

     

       189
       +
       	const freeVars: number[] = [];

     

       190
       +
       	for (let j = 0; j < m; j++) {

     

       191
       +
       		if (!isPivot[j]) freeVars.push(j);

     

       192
       +
       	}

     

       193
       +
       

     

       194
       +
       	if (freeVars.length > 15) {

     

       195
       +
       		return new Array(m).fill(0);

     

       196
       +
       	}

     

       197
       +
       

     

       198
       +
       	let minPresses = Infinity;

     

       199
       +
       	let bestSolution: number[] = [];

     

       200
       +
       

     

       201
       +
       	const maxTarget = Math.max(...target);

     

       202
       +
       	const maxFreeValue = Math.min(maxTarget * 2, 200);

     

       203
       +
       

     

       204
       +
       	function searchFreeVars(idx: number, currentSol: number[]) {

     

       205
       +
       		if (idx === freeVars.length) {

     

       206
       +
       			const sol = [...currentSol];

     

       207
       +
       			let valid = true;

     

       208
       +
       			for (let i = pivotCols.length - 1; i >= 0; i--) {

     

       209
       +
       				const col = pivotCols[i];

     

       210
       +
       				let val = matrix[i][m];

     

       211
       +
       				for (let j = col + 1; j < m; j++) {

     

       212
       +
       					val -= matrix[i][j] * sol[j];

     

       213
       +
       				}

     

       214
       +
       				sol[col] = val;

     

       215
       +
       

     

       216
       +
       				if (val < -1e-9 || Math.abs(val - Math.round(val)) > 1e-9) {

     

       217
       +
       					valid = false;

     

       218
       +
       					break;

     

       219
       +
       				}

     

       220
       +
       			}

     

       221
       +
       

     

       222
       +
       			if (valid) {

     

       223
       +
       				const intSol = sol.map((x) => Math.round(Math.max(0, x)));

     

       224
       +
       				const presses = intSol.reduce((sum, x) => sum + x, 0);

     

       225
       +
       				if (presses < minPresses) {

     

       226
       +
       					minPresses = presses;

     

       227
       +
       					bestSolution = intSol;

     

       228
       +
       				}

     

       229
       +
       			}

     

       230
       +
       			return;

     

       231
       +
       		}

     

       232
       +
       

     

       233
       +
       		for (let val = 0; val <= maxFreeValue; val++) {

     

       234
       +
       			currentSol[freeVars[idx]] = val;

     

       235
       +
       			searchFreeVars(idx + 1, currentSol);

     

       236
       +
       		}

     

       237
       +
       	}

     

       238
       +
       

     

       239
       +
       	searchFreeVars(0, new Array(m).fill(0));

     

       240
       +
       

     

       241
       +
       	return bestSolution;

     

       242
       +
       }

     

       243
       +
       

     

       244
       +
       const machinesData = JSON.stringify(machines);

     

       245
       +
       

     

       246
       +
       const html = `<!DOCTYPE html>

     

       247
       +
       <html lang="en">

     

       248
       +
       <head>

     

       249
       +
       	<meta charset="UTF-8">

     

       250
       +
       	<meta name="viewport" content="width=device-width, initial-scale=1.0">

     

       251
       +
       	<title>AoC 2025 Day 10 - Factory</title>

     

       252
       +
       	<style>

     

       253
       +
       		* {

     

       254
       +
       			box-sizing: border-box;

     

       255
       +
       		}

     

       256
       +
       		body {

     

       257
       +
       			background: #1e1e2e;

     

       258
       +
       			color: #cdd6f4;

     

       259
       +
       			font-family: "Source Code Pro", monospace;

     

       260
       +
       			font-size: 14pt;

     

       261
       +
       			font-weight: 300;

     

       262
       +
       			padding: 20px;

     

       263
       +
       			display: flex;

     

       264
       +
       			flex-direction: column;

     

       265
       +
       			align-items: center;

     

       266
       +
       			min-height: 100vh;

     

       267
       +
       			margin: 0;

     

       268
       +
       		}

     

       269
       +
       		h1 {

     

       270
       +
       			color: #a6e3a1;

     

       271
       +
       			text-shadow: 0 0 2px #a6e3a1, 0 0 5px #a6e3a1;

     

       272
       +
       			margin-bottom: 10px;

     

       273
       +
       			font-size: 1em;

     

       274
       +
       			font-weight: normal;

     

       275
       +
       		}

     

       276
       +
       		.controls {

     

       277
       +
       			background: #11111b;

     

       278
       +
       			border: 1px solid #313244;

     

       279
       +
       			padding: 15px;

     

       280
       +
       			margin: 15px 0;

     

       281
       +
       			max-width: 1200px;

     

       282
       +
       			border-radius: 4px;

     

       283
       +
       			width: 100%;

     

       284
       +
       		}

     

       285
       +
       		.control-row {

     

       286
       +
       			display: flex;

     

       287
       +
       			gap: 15px;

     

       288
       +
       			align-items: center;

     

       289
       +
       			margin-bottom: 15px;

     

       290
       +
       			flex-wrap: wrap;

     

       291
       +
       			justify-content: center;

     

       292
       +
       		}

     

       293
       +
       		.control-row:last-child {

     

       294
       +
       			margin-bottom: 0;

     

       295
       +
       		}

     

       296
       +
       		button {

     

       297
       +
       			background: #11111b;

     

       298
       +
       			color: #a6e3a1;

     

       299
       +
       			border: 1px solid #313244;

     

       300
       +
       			padding: 8px 16px;

     

       301
       +
       			cursor: pointer;

     

       302
       +
       			font-family: inherit;

     

       303
       +
       			font-size: 14px;

     

       304
       +
       			border-radius: 3px;

     

       305
       +
       		}

     

       306
       +
       		button:hover {

     

       307
       +
       			background: #181825;

     

       308
       +
       		}

     

       309
       +
       		button:disabled {

     

       310
       +
       			opacity: 0.5;

     

       311
       +
       			cursor: not-allowed;

     

       312
       +
       		}

     

       313
       +
       		.speed-control {

     

       314
       +
       			display: flex;

     

       315
       +
       			align-items: center;

     

       316
       +
       			gap: 8px;

     

       317
       +
       			font-size: 13px;

     

       318
       +
       			color: #a6adc8;

     

       319
       +
       		}

     

       320
       +
       		.speed-control input[type="range"] {

     

       321
       +
       			width: 120px;

     

       322
       +
       			height: 6px;

     

       323
       +
       			background: #313244;

     

       324
       +
       			outline: none;

     

       325
       +
       			-webkit-appearance: none;

     

       326
       +
       			border-radius: 3px;

     

       327
       +
       		}

     

       328
       +
       		.speed-control input[type="range"]::-webkit-slider-thumb {

     

       329
       +
       			-webkit-appearance: none;

     

       330
       +
       			appearance: none;

     

       331
       +
       			width: 14px;

     

       332
       +
       			height: 14px;

     

       333
       +
       			background: #a6e3a1;

     

       334
       +
       			cursor: pointer;

     

       335
       +
       			border-radius: 50%;

     

       336
       +
       			border: 1px solid #313244;

     

       337
       +
       		}

     

       338
       +
       		.speed-control input[type="range"]::-moz-range-thumb {

     

       339
       +
       			width: 14px;

     

       340
       +
       			height: 14px;

     

       341
       +
       			background: #a6e3a1;

     

       342
       +
       			cursor: pointer;

     

       343
       +
       			border-radius: 50%;

     

       344
       +
       			border: 1px solid #313244;

     

       345
       +
       		}

     

       346
       +
       		.machine-display {

     

       347
       +
       			background: #11111b;

     

       348
       +
       			border: 1px solid #313244;

     

       349
       +
       			padding: 20px;

     

       350
       +
       			margin: 20px 0;

     

       351
       +
       			max-width: 1200px;

     

       352
       +
       			border-radius: 4px;

     

       353
       +
       			width: 100%;

     

       354
       +
       		}

     

       355
       +
       		.lights {

     

       356
       +
       			display: flex;

     

       357
       +
       			gap: 10px;

     

       358
       +
       			justify-content: center;

     

       359
       +
       			margin: 20px 0;

     

       360
       +
       			flex-wrap: wrap;

     

       361
       +
       		}

     

       362
       +
       		.light {

     

       363
       +
       			width: 50px;

     

       364
       +
       			height: 50px;

     

       365
       +
       			border-radius: 50%;

     

       366
       +
       			border: 2px solid #313244;

     

       367
       +
       			display: flex;

     

       368
       +
       			flex-direction: column;

     

       369
       +
       			align-items: center;

     

       370
       +
       			justify-content: center;

     

       371
       +
       			font-size: 9px;

     

       372
       +
       			transition: all 0.3s ease;

     

       373
       +
       			overflow: hidden;

     

       374
       +
       			text-align: center;

     

       375
       +
       			padding: 3px;

     

       376
       +
       			line-height: 1.1;

     

       377
       +
       		}

     

       378
       +
       		.light.off {

     

       379
       +
       			background: #1e1e2e;

     

       380
       +
       			color: #6c7086;

     

       381
       +
       		}

     

       382
       +
       		.light.on {

     

       383
       +
       			background: #a6e3a1;

     

       384
       +
       			color: #1e1e2e;

     

       385
       +
       			box-shadow: 0 0 10px #a6e3a1;

     

       386
       +
       		}

     

       387
       +
       		.light.target {

     

       388
       +
       			border-color: #f9e2af;

     

       389
       +
       			border-width: 3px;

     

       390
       +
       		}

     

       391
       +
       		.buttons-grid {

     

       392
       +
       			display: grid;

     

       393
       +
       			grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));

     

       394
       +
       			gap: 10px;

     

       395
       +
       			margin: 20px 0;

     

       396
       +
       		}

     

       397
       +
       		.button-display {

     

       398
       +
       			background: #181825;

     

       399
       +
       			border: 1px solid #313244;

     

       400
       +
       			padding: 10px;

     

       401
       +
       			border-radius: 4px;

     

       402
       +
       			text-align: center;

     

       403
       +
       			cursor: pointer;

     

       404
       +
       			transition: all 0.2s ease;

     

       405
       +
       		}

     

       406
       +
       		.button-display:hover {

     

       407
       +
       			background: #313244;

     

       408
       +
       		}

     

       409
       +
       		.button-display.pressed {

     

       410
       +
       			background: #a6e3a1;

     

       411
       +
       			color: #1e1e2e;

     

       412
       +
       			border-color: #a6e3a1;

     

       413
       +
       		}

     

       414
       +
       		.button-label {

     

       415
       +
       			font-size: 12px;

     

       416
       +
       			margin-bottom: 5px;

     

       417
       +
       			color: #a6adc8;

     

       418
       +
       		}

     

       419
       +
       		.button-toggles {

     

       420
       +
       			font-size: 11px;

     

       421
       +
       			color: #6c7086;

     

       422
       +
       		}

     

       423
       +
       		.stats {

     

       424
       +
       			background: #11111b;

     

       425
       +
       			border: 1px solid #313244;

     

       426
       +
       			padding: 10px 15px;

     

       427
       +
       			margin: 10px 0;

     

       428
       +
       			max-width: 1200px;

     

       429
       +
       			border-radius: 4px;

     

       430
       +
       			text-align: center;

     

       431
       +
       			font-size: 13px;

     

       432
       +
       			color: #a6adc8;

     

       433
       +
       			width: 100%;

     

       434
       +
       			margin-top: auto;

     

       435
       +
       		}

     

       436
       +
       		.info {

     

       437
       +
       			margin: 10px 0;

     

       438
       +
       			text-align: center;

     

       439
       +
       			color: #f9e2af;

     

       440
       +
       		}

     

       441
       +
       		a {

     

       442
       +
       			text-decoration: none;

     

       443
       +
       			color: #a6e3a1;

     

       444
       +
       			outline: 0;

     

       445
       +
       		}

     

       446
       +
       		a:hover, a:focus {

     

       447
       +
       			text-decoration: underline;

     

       448
       +
       		}

     

       449
       +
       	</style>

     

       450
       +
       </head>

     

       451
       +
       <body>

     

       452
       +
       	<h1>AoC 2025 Day 10 - Factory Machines</h1>

     

       453
       +
       	

     

       454
       +
       	<div class="controls">

     

       455
       +
       		<div class="control-row">

     

       456
       +
       			<button id="togglePart" style="color: #f9e2af; font-weight: bold;">Part 1</button>

     

       457
       +
       			<button id="prev">← Previous Machine</button>

     

       458
       +
       			<button id="play">▶ Play</button>

     

       459
       +
       			<button id="next">Next Machine →</button>

     

       460
       +
       			<button id="reset">↺ Reset</button>

     

       461
       +
       			<div class="speed-control">

     

       462
       +
       				<label for="speed">Speed:</label>

     

       463
       +
       				<input type="range" id="speed" min="1" max="25" value="5" step="1">

     

       464
       +
       				<span id="speedValue">5x</span>

     

       465
       +
       			</div>

     

       466
       +
       		</div>

     

       467
       +
       	</div>

     

       468
       +
       

     

       469
       +
       	<div class="info" id="machineInfo">Machine 1 / ${machines.length}</div>

     

       470
       +
       

     

       471
       +
       	<div class="machine-display">

     

       472
       +
       		<h2 id="displayTitle" style="text-align: center; color: #89b4fa; font-size: 18px; margin-bottom: 20px;">Indicator Lights</h2>

     

       473
       +
       		<div class="lights" id="lights"></div>

     

       474
       +
       		

     

       475
       +
       		<h2 style="text-align: center; color: #89b4fa; font-size: 18px; margin: 30px 0 20px 0;">Buttons</h2>

     

       476
       +
       		<div class="buttons-grid" id="buttons"></div>

     

       477
       +
       	</div>

     

       478
       +
       

     

       479
       +
       	<div class="stats">

     

       480
       +
       		<div id="statsInfo">Buttons Pressed: 0 | Target: ? | Accumulated Total: 0</div>

     

       481
       +
       		<div style="margin-top: 5px; font-size: 11px;"><a href="../index.html">[Return to Index]</a></div>

     

       482
       +
       	</div>

     

       483
       +
       

     

       484
       +
       	<script type="module">

     

       485
       +
       		const machines = ${machinesData};

     

       486
       +
       		

     

       487
       +
       		let currentMode = 1; // 1 or 2

     

       488
       +
       		let currentMachineIndex = 0;

     

       489
       +
       		let currentState = [];

     

       490
       +
       		let buttonStates = []; // Track which buttons are "on" (pressed odd number of times)

     

       491
       +
       		let isPlaying = false;

     

       492
       +
       		let showingSolution = false;

     

       493
       +
       		let solutionSteps = [];

     

       494
       +
       		let currentStep = 0;

     

       495
       +
       		let solvedMachines = new Set(); // Track which machines have been solved

     

       496
       +
       		let animationSpeed = 200; // ms between button presses (default 5x)

     

       497
       +
       

     

       498
       +
       

     

       499
       +
       		function renderMachine() {

     

       500
       +
       			const machine = machines[currentMachineIndex];

     

       501
       +
       			

     

       502
       +
       			// Update title based on mode

     

       503
       +
       			const titleEl = document.getElementById('displayTitle');

     

       504
       +
       			if (currentMode === 1) {

     

       505
       +
       				titleEl.textContent = 'Indicator Lights';

     

       506
       +
       				titleEl.style.color = '#89b4fa';

     

       507
       +
       			} else {

     

       508
       +
       				titleEl.textContent = 'Joltage Counters';

     

       509
       +
       				titleEl.style.color = '#f9e2af';

     

       510
       +
       			}

     

       511
       +
       			

     

       512
       +
       			// Render lights or counters

     

       513
       +
       			const lightsDiv = document.getElementById('lights');

     

       514
       +
       			lightsDiv.innerHTML = '';

     

       515
       +
       			

     

       516
       +
       			if (currentMode === 1) {

     

       517
       +
       				// Part 1: Indicator lights

     

       518
       +
       				machine.target.forEach((target, i) => {

     

       519
       +
       					const light = document.createElement('div');

     

       520
       +
       					light.className = \`light \${currentState[i] ? 'on' : 'off'} \${target ? 'target' : ''}\`;

     

       521
       +
       					light.textContent = i;

     

       522
       +
       					lightsDiv.appendChild(light);

     

       523
       +
       				});

     

       524
       +
       			} else {

     

       525
       +
       				// Part 2: Joltage counters

     

       526
       +
       				machine.joltages.forEach((target, i) => {

     

       527
       +
       					const counter = document.createElement('div');

     

       528
       +
       					const current = currentState[i] || 0;

     

       529
       +
       					const isTarget = current === target;

     

       530
       +
       					counter.className = \`light \${isTarget ? 'on' : 'off'} \${true ? 'target' : ''}\`;

     

       531
       +
       					counter.innerHTML = \`<div style="font-size: 7px; opacity: 0.7;">[\${i}]</div><div style="font-size: 10px; font-weight: bold;">\${current}/<span style="color: #f9e2af;">\${target}</span></div>\`;

     

       532
       +
       					lightsDiv.appendChild(counter);

     

       533
       +
       				});

     

       534
       +
       			}

     

       535
       +
       

     

       536
       +
       			// Render buttons

     

       537
       +
       			const buttonsDiv = document.getElementById('buttons');

     

       538
       +
       			buttonsDiv.innerHTML = '';

     

       539
       +
       			machine.buttons.forEach((toggles, i) => {

     

       540
       +
       				const btn = document.createElement('div');

     

       541
       +
       				const pressCount = buttonStates[i] || 0;

     

       542
       +
       				const isPressed = currentMode === 1 ? (pressCount % 2 === 1) : (pressCount > 0);

     

       543
       +
       				btn.className = \`button-display \${isPressed ? 'pressed' : ''}\`;

     

       544
       +
       				btn.innerHTML = \`

     

       545
       +
       					<div class="button-label">Button \${i}\${currentMode === 2 ? \` (\${pressCount})\` : ''}</div>

     

       546
       +
       					<div class="button-toggles">Affects: \${toggles.join(', ')}</div>

     

       547
       +
       				\`;

     

       548
       +
       				btn.addEventListener('click', () => toggleButton(i));

     

       549
       +
       				buttonsDiv.appendChild(btn);

     

       550
       +
       			});

     

       551
       +
       		}

     

       552
       +
       

     

       553
       +
       		function toggleButton(buttonIndex) {

     

       554
       +
       			const machine = machines[currentMachineIndex];

     

       555
       +
       			

     

       556
       +
       			if (currentMode === 1) {

     

       557
       +
       				// Part 1: Toggle lights (XOR)

     

       558
       +
       				buttonStates[buttonIndex] = buttonStates[buttonIndex] ? 0 : 1;

     

       559
       +
       				machine.buttons[buttonIndex].forEach(lightIndex => {

     

       560
       +
       					currentState[lightIndex] = !currentState[lightIndex];

     

       561
       +
       				});

     

       562
       +
       			} else {

     

       563
       +
       				// Part 2: Increment counters

     

       564
       +
       				buttonStates[buttonIndex] = (buttonStates[buttonIndex] || 0) + 1;

     

       565
       +
       				machine.buttons[buttonIndex].forEach(counterIndex => {

     

       566
       +
       					currentState[counterIndex] = (currentState[counterIndex] || 0) + 1;

     

       567
       +
       				});

     

       568
       +
       			}

     

       569
       +
       			

     

       570
       +
       			renderMachine();

     

       571
       +
       			updateStats();

     

       572
       +
       		}

     

       573
       +
       

     

       574
       +
       		function solveMachine(machine) {

     

       575
       +
       			const n = machine.target.length;

     

       576
       +
       			const m = machine.buttons.length;

     

       577
       +
       

     

       578
       +
       			const matrix = [];

     

       579
       +
       			for (let i = 0; i < n; i++) {

     

       580
       +
       				const row = [];

     

       581
       +
       				for (let j = 0; j < m; j++) {

     

       582
       +
       					row.push(machine.buttons[j].includes(i) ? 1 : 0);

     

       583
       +
       				}

     

       584
       +
       				row.push(machine.target[i] ? 1 : 0);

     

       585
       +
       				matrix.push(row);

     

       586
       +
       			}

     

       587
       +
       

     

       588
       +
       			const pivotCols = [];

     

       589
       +
       			for (let col = 0; col < m; col++) {

     

       590
       +
       				let pivotRow = -1;

     

       591
       +
       				for (let row = pivotCols.length; row < n; row++) {

     

       592
       +
       					if (matrix[row][col] === 1) {

     

       593
       +
       						pivotRow = row;

     

       594
       +
       						break;

     

       595
       +
       					}

     

       596
       +
       				}

     

       597
       +
       

     

       598
       +
       				if (pivotRow === -1) continue;

     

       599
       +
       

     

       600
       +
       				const targetRow = pivotCols.length;

     

       601
       +
       				if (pivotRow !== targetRow) {

     

       602
       +
       					[matrix[pivotRow], matrix[targetRow]] = [matrix[targetRow], matrix[pivotRow]];

     

       603
       +
       				}

     

       604
       +
       

     

       605
       +
       				pivotCols.push(col);

     

       606
       +
       

     

       607
       +
       				for (let row = 0; row < n; row++) {

     

       608
       +
       					if (row !== targetRow && matrix[row][col] === 1) {

     

       609
       +
       						for (let c = 0; c <= m; c++) {

     

       610
       +
       							matrix[row][c] ^= matrix[targetRow][c];

     

       611
       +
       						}

     

       612
       +
       					}

     

       613
       +
       				}

     

       614
       +
       			}

     

       615
       +
       

     

       616
       +
       			const solution = new Array(m).fill(0);

     

       617
       +
       			for (let i = pivotCols.length - 1; i >= 0; i--) {

     

       618
       +
       				const col = pivotCols[i];

     

       619
       +
       				solution[col] = matrix[i][m];

     

       620
       +
       				for (let j = col + 1; j < m; j++) {

     

       621
       +
       					if (matrix[i][j] === 1) {

     

       622
       +
       						solution[col] ^= solution[j];

     

       623
       +
       					}

     

       624
       +
       				}

     

       625
       +
       			}

     

       626
       +
       

     

       627
       +
       			return solution;

     

       628
       +
       		}

     

       629
       +
       

     

       630
       +
       		// Part 2 solver (copy of server-side logic)

     

       631
       +
       		function solveMachinePart2(machine) {

     

       632
       +
       			const n = machine.joltages.length;

     

       633
       +
       			const m = machine.buttons.length;

     

       634
       +
       			const target = machine.joltages;

     

       635
       +
       

     

       636
       +
       			const A = [];

     

       637
       +
       			for (let i = 0; i < n; i++) {

     

       638
       +
       				const row = [];

     

       639
       +
       				for (let j = 0; j < m; j++) {

     

       640
       +
       					row.push(machine.buttons[j].includes(i) ? 1 : 0);

     

       641
       +
       				}

     

       642
       +
       				A.push(row);

     

       643
       +
       			}

     

       644
       +
       

     

       645
       +
       			const matrix = [];

     

       646
       +
       			for (let i = 0; i < n; i++) {

     

       647
       +
       				matrix.push([...A[i], target[i]]);

     

       648
       +
       			}

     

       649
       +
       

     

       650
       +
       			const pivotCols = [];

     

       651
       +
       			for (let col = 0; col < m; col++) {

     

       652
       +
       				let pivotRow = -1;

     

       653
       +
       				for (let row = pivotCols.length; row < n; row++) {

     

       654
       +
       					if (matrix[row][col] !== 0) {

     

       655
       +
       						pivotRow = row;

     

       656
       +
       						break;

     

       657
       +
       					}

     

       658
       +
       				}

     

       659
       +
       

     

       660
       +
       				if (pivotRow === -1) continue;

     

       661
       +
       

     

       662
       +
       				const targetRow = pivotCols.length;

     

       663
       +
       				if (pivotRow !== targetRow) {

     

       664
       +
       					[matrix[pivotRow], matrix[targetRow]] = [matrix[targetRow], matrix[pivotRow]];

     

       665
       +
       				}

     

       666
       +
       

     

       667
       +
       				pivotCols.push(col);

     

       668
       +
       

     

       669
       +
       				const pivot = matrix[targetRow][col];

     

       670
       +
       				for (let c = 0; c <= m; c++) {

     

       671
       +
       					matrix[targetRow][c] /= pivot;

     

       672
       +
       				}

     

       673
       +
       

     

       674
       +
       				for (let row = 0; row < n; row++) {

     

       675
       +
       					if (row !== targetRow && matrix[row][col] !== 0) {

     

       676
       +
       						const factor = matrix[row][col];

     

       677
       +
       						for (let c = 0; c <= m; c++) {

     

       678
       +
       							matrix[row][c] -= factor * matrix[targetRow][c];

     

       679
       +
       						}

     

       680
       +
       					}

     

       681
       +
       				}

     

       682
       +
       			}

     

       683
       +
       

     

       684
       +
       			const isPivot = new Array(m).fill(false);

     

       685
       +
       			pivotCols.forEach(col => isPivot[col] = true);

     

       686
       +
       			const freeVars = [];

     

       687
       +
       			for (let j = 0; j < m; j++) {

     

       688
       +
       				if (!isPivot[j]) freeVars.push(j);

     

       689
       +
       			}

     

       690
       +
       

     

       691
       +
       			if (freeVars.length > 8) { // Reduced limit for browser

     

       692
       +
       				return new Array(m).fill(0);

     

       693
       +
       			}

     

       694
       +
       

     

       695
       +
       			let minPresses = Infinity;

     

       696
       +
       			let bestSolution = [];

     

       697
       +
       

     

       698
       +
       			const maxTarget = Math.max(...target);

     

       699
       +
       			const maxFreeValue = Math.min(maxTarget * 2, 100);

     

       700
       +
       

     

       701
       +
       			function searchFreeVars(idx, currentSol) {

     

       702
       +
       				if (idx === freeVars.length) {

     

       703
       +
       					const sol = [...currentSol];

     

       704
       +
       					let valid = true;

     

       705
       +
       					for (let i = pivotCols.length - 1; i >= 0; i--) {

     

       706
       +
       						const col = pivotCols[i];

     

       707
       +
       						let val = matrix[i][m];

     

       708
       +
       						for (let j = col + 1; j < m; j++) {

     

       709
       +
       							val -= matrix[i][j] * sol[j];

     

       710
       +
       						}

     

       711
       +
       						sol[col] = val;

     

       712
       +
       

     

       713
       +
       						if (val < -1e-9 || Math.abs(val - Math.round(val)) > 1e-9) {

     

       714
       +
       							valid = false;

     

       715
       +
       							break;

     

       716
       +
       						}

     

       717
       +
       					}

     

       718
       +
       

     

       719
       +
       					if (valid) {

     

       720
       +
       						const intSol = sol.map(x => Math.round(Math.max(0, x)));

     

       721
       +
       						const presses = intSol.reduce((sum, x) => sum + x, 0);

     

       722
       +
       						if (presses < minPresses) {

     

       723
       +
       							minPresses = presses;

     

       724
       +
       							bestSolution = intSol;

     

       725
       +
       						}

     

       726
       +
       					}

     

       727
       +
       					return;

     

       728
       +
       				}

     

       729
       +
       

     

       730
       +
       				for (let val = 0; val <= maxFreeValue; val++) {

     

       731
       +
       					currentSol[freeVars[idx]] = val;

     

       732
       +
       					searchFreeVars(idx + 1, currentSol);

     

       733
       +
       				}

     

       734
       +
       			}

     

       735
       +
       

     

       736
       +
       			searchFreeVars(0, new Array(m).fill(0));

     

       737
       +
       			return bestSolution;

     

       738
       +
       		}

     

       739
       +
       

     

       740
       +
       		function getCurrentSolution() {

     

       741
       +
       			const machine = machines[currentMachineIndex];

     

       742
       +
       			return currentMode === 1 ? solveMachine(machine) : solveMachinePart2(machine);

     

       743
       +
       		}

     

       744
       +
       

     

       745
       +
       		function showSolution() {

     

       746
       +
       			const machine = machines[currentMachineIndex];

     

       747
       +
       			const solution = getCurrentSolution();

     

       748
       +
       			

     

       749
       +
       			if (currentMode === 1) {

     

       750
       +
       				currentState = new Array(machine.target.length).fill(false);

     

       751
       +
       				buttonStates = [...solution].map(v => v === 1);

     

       752
       +
       				

     

       753
       +
       				solution.forEach((shouldPress, buttonIndex) => {

     

       754
       +
       					if (shouldPress === 1) {

     

       755
       +
       						machine.buttons[buttonIndex].forEach(lightIndex => {

     

       756
       +
       							currentState[lightIndex] = !currentState[lightIndex];

     

       757
       +
       						});

     

       758
       +
       					}

     

       759
       +
       				});

     

       760
       +
       			} else {

     

       761
       +
       				currentState = new Array(machine.joltages.length).fill(0);

     

       762
       +
       				buttonStates = [...solution];

     

       763
       +
       				

     

       764
       +
       				solution.forEach((pressCount, buttonIndex) => {

     

       765
       +
       					for (let p = 0; p < pressCount; p++) {

     

       766
       +
       						machine.buttons[buttonIndex].forEach(counterIndex => {

     

       767
       +
       							currentState[counterIndex]++;

     

       768
       +
       						});

     

       769
       +
       					}

     

       770
       +
       				});

     

       771
       +
       			}

     

       772
       +
       			

     

       773
       +
       			showingSolution = true;

     

       774
       +
       			renderMachine();

     

       775
       +
       			updateStats();

     

       776
       +
       		}

     

       777
       +
       

     

       778
       +
       		function updateStats() {

     

       779
       +
       			const machine = machines[currentMachineIndex];

     

       780
       +
       			const solution = getCurrentSolution();

     

       781
       +
       			const minPresses = solution.reduce((a, b) => a + b, 0);

     

       782
       +
       			

     

       783
       +
       			let totalPressed;

     

       784
       +
       			if (currentMode === 1) {

     

       785
       +
       				totalPressed = buttonStates.filter(b => b).length;

     

       786
       +
       			} else {

     

       787
       +
       				totalPressed = buttonStates.reduce((sum, count) => sum + (count || 0), 0);

     

       788
       +
       			}

     

       789
       +
       			

     

       790
       +
       			// Calculate accumulated total for solved machines

     

       791
       +
       			let accumulatedTotal = 0;

     

       792
       +
       			solvedMachines.forEach(idx => {

     

       793
       +
       				const m = machines[idx];

     

       794
       +
       				const sol = currentMode === 1 ? solveMachine(m) : solveMachinePart2(m);

     

       795
       +
       				accumulatedTotal += sol.reduce((a, b) => a + b, 0);

     

       796
       +
       			});

     

       797
       +
       			

     

       798
       +
       			document.getElementById('statsInfo').textContent = \`Buttons Pressed: \${totalPressed} | Target: \${minPresses} | Accumulated Total: \${accumulatedTotal}\`;

     

       799
       +
       			document.getElementById('machineInfo').textContent = \`Machine \${currentMachineIndex + 1} / \${machines.length}\`;

     

       800
       +
       		}

     

       801
       +
       

     

       802
       +
       		document.getElementById('prev').addEventListener('click', () => {

     

       803
       +
       			if (currentMachineIndex > 0) {

     

       804
       +
       				isPlaying = false;

     

       805
       +
       				document.getElementById('play').textContent = '▶ Play';

     

       806
       +
       				currentMachineIndex--;

     

       807
       +
       				initMachine();

     

       808
       +
       			}

     

       809
       +
       		});

     

       810
       +
       

     

       811
       +
       		document.getElementById('next').addEventListener('click', () => {

     

       812
       +
       			if (currentMachineIndex < machines.length - 1) {

     

       813
       +
       				isPlaying = false;

     

       814
       +
       				document.getElementById('play').textContent = '▶ Play';

     

       815
       +
       				currentMachineIndex++;

     

       816
       +
       				initMachine();

     

       817
       +
       			}

     

       818
       +
       		});

     

       819
       +
       

     

       820
       +
       		document.getElementById('reset').addEventListener('click', initMachine);

     

       821
       +
       

     

       822
       +
       		document.getElementById('togglePart').addEventListener('click', () => {

     

       823
       +
       			currentMode = currentMode === 1 ? 2 : 1;

     

       824
       +
       			document.getElementById('togglePart').textContent = \`Part \${currentMode}\`;

     

       825
       +
       			solvedMachines.clear();

     

       826
       +
       			initMachine();

     

       827
       +
       		});

     

       828
       +
       

     

       829
       +
       		document.getElementById('play').addEventListener('click', () => {

     

       830
       +
       			isPlaying = !isPlaying;

     

       831
       +
       			document.getElementById('play').textContent = isPlaying ? '⏸ Pause' : '▶ Play';

     

       832
       +
       			if (isPlaying) {

     

       833
       +
       				animateSolution();

     

       834
       +
       			}

     

       835
       +
       		});

     

       836
       +
       

     

       837
       +
       		// Speed control

     

       838
       +
       		const speedSlider = document.getElementById('speed');

     

       839
       +
       		const speedValue = document.getElementById('speedValue');

     

       840
       +
       		speedSlider.addEventListener('input', (e) => {

     

       841
       +
       			const speed = parseInt(e.target.value);

     

       842
       +
       			speedValue.textContent = \`\${speed}x\`;

     

       843
       +
       			// Faster speed = shorter delay (inverse relationship)

     

       844
       +
       			animationSpeed = 1000 / speed;

     

       845
       +
       		});

     

       846
       +
       

     

       847
       +
       		function animateSolution() {

     

       848
       +
       			if (!isPlaying) return;

     

       849
       +
       			

     

       850
       +
       			if (currentStep < solutionSteps.length) {

     

       851
       +
       				// Toggle the next button in the solution

     

       852
       +
       				const buttonIndex = solutionSteps[currentStep];

     

       853
       +
       				toggleButton(buttonIndex);

     

       854
       +
       				currentStep++;

     

       855
       +
       				

     

       856
       +
       				// Use 10x faster speed for Part 2 (more button presses)

     

       857
       +
       				const delay = currentMode === 2 ? animationSpeed / 10 : animationSpeed;

     

       858
       +
       				setTimeout(animateSolution, delay);

     

       859
       +
       			} else {

     

       860
       +
       				// Mark this machine as solved

     

       861
       +
       				const machine = machines[currentMachineIndex];

     

       862
       +
       				let isCorrect;

     

       863
       +
       				if (currentMode === 1) {

     

       864
       +
       					isCorrect = currentState.every((state, i) => state === machine.target[i]);

     

       865
       +
       				} else {

     

       866
       +
       					isCorrect = currentState.every((state, i) => state === machine.joltages[i]);

     

       867
       +
       				}

     

       868
       +
       				

     

       869
       +
       				if (isCorrect) {

     

       870
       +
       					solvedMachines.add(currentMachineIndex);

     

       871
       +
       					updateStats();

     

       872
       +
       				}

     

       873
       +
       				

     

       874
       +
       				// Current machine done, move to next immediately

     

       875
       +
       				if (currentMachineIndex < machines.length - 1) {

     

       876
       +
       					if (isPlaying) {

     

       877
       +
       						currentMachineIndex++;

     

       878
       +
       						initMachine();

     

       879
       +
       						setTimeout(animateSolution, animationSpeed);

     

       880
       +
       					}

     

       881
       +
       				} else {

     

       882
       +
       					// All done

     

       883
       +
       					isPlaying = false;

     

       884
       +
       					document.getElementById('play').textContent = '▶ Play';

     

       885
       +
       					setTimeout(() => {

     

       886
       +
       						currentMachineIndex = 0;

     

       887
       +
       						initMachine();

     

       888
       +
       					}, animationSpeed * 4);

     

       889
       +
       				}

     

       890
       +
       			}

     

       891
       +
       		}

     

       892
       +
       

     

       893
       +
       		function initMachine() {

     

       894
       +
       			const machine = machines[currentMachineIndex];

     

       895
       +
       			showingSolution = false;

     

       896
       +
       			currentStep = 0;

     

       897
       +
       			

     

       898
       +
       			if (currentMode === 1) {

     

       899
       +
       				// Part 1

     

       900
       +
       				currentState = new Array(machine.target.length).fill(false);

     

       901
       +
       				buttonStates = new Array(machine.buttons.length).fill(0);

     

       902
       +
       				

     

       903
       +
       				const solution = solveMachine(machine);

     

       904
       +
       				solutionSteps = [];

     

       905
       +
       				solution.forEach((shouldPress, idx) => {

     

       906
       +
       					if (shouldPress === 1) {

     

       907
       +
       						solutionSteps.push(idx);

     

       908
       +
       					}

     

       909
       +
       				});

     

       910
       +
       			} else {

     

       911
       +
       				// Part 2

     

       912
       +
       				currentState = new Array(machine.joltages.length).fill(0);

     

       913
       +
       				buttonStates = new Array(machine.buttons.length).fill(0);

     

       914
       +
       				

     

       915
       +
       				const solution = solveMachinePart2(machine);

     

       916
       +
       				solutionSteps = [];

     

       917
       +
       				solution.forEach((pressCount, idx) => {

     

       918
       +
       					for (let i = 0; i < pressCount; i++) {

     

       919
       +
       						solutionSteps.push(idx);

     

       920
       +
       					}

     

       921
       +
       				});

     

       922
       +
       			}

     

       923
       +
       			

     

       924
       +
       			renderMachine();

     

       925
       +
       			updateStats();

     

       926
       +
       		}

     

       927
       +
       

     

       928
       +
       		// Initialize

     

       929
       +
       		initMachine();

     

       930
       +
       	</script>

     

       931
       +
       </body>

     

       932
       +
       </html>`;

     

       933
       +
       

     

       934
       +
       await Bun.write(`${scriptDir}/index.html`, html);

+687

vis/10/index.html

···

       1
       +
       <!DOCTYPE html>

     

       2
       +
       <html lang="en">

     

       3
       +
       <head>

     

       4
       +
       	<meta charset="UTF-8">

     

       5
       +
       	<meta name="viewport" content="width=device-width, initial-scale=1.0">

     

       6
       +
       	<title>AoC 2025 Day 10 - Factory</title>

     

       7
       +
       	<style>

     

       8
       +
       		* {

     

       9
       +
       			box-sizing: border-box;

     

       10
       +
       		}

     

       11
       +
       		body {

     

       12
       +
       			background: #1e1e2e;

     

       13
       +
       			color: #cdd6f4;

     

       14
       +
       			font-family: "Source Code Pro", monospace;

     

       15
       +
       			font-size: 14pt;

     

       16
       +
       			font-weight: 300;

     

       17
       +
       			padding: 20px;

     

       18
       +
       			display: flex;

     

       19
       +
       			flex-direction: column;

     

       20
       +
       			align-items: center;

     

       21
       +
       			min-height: 100vh;

     

       22
       +
       			margin: 0;

     

       23
       +
       		}

     

       24
       +
       		h1 {

     

       25
       +
       			color: #a6e3a1;

     

       26
       +
       			text-shadow: 0 0 2px #a6e3a1, 0 0 5px #a6e3a1;

     

       27
       +
       			margin-bottom: 10px;

     

       28
       +
       			font-size: 1em;

     

       29
       +
       			font-weight: normal;

     

       30
       +
       		}

     

       31
       +
       		.controls {

     

       32
       +
       			background: #11111b;

     

       33
       +
       			border: 1px solid #313244;

     

       34
       +
       			padding: 15px;

     

       35
       +
       			margin: 15px 0;

     

       36
       +
       			max-width: 1200px;

     

       37
       +
       			border-radius: 4px;

     

       38
       +
       			width: 100%;

     

       39
       +
       		}

     

       40
       +
       		.control-row {

     

       41
       +
       			display: flex;

     

       42
       +
       			gap: 15px;

     

       43
       +
       			align-items: center;

     

       44
       +
       			margin-bottom: 15px;

     

       45
       +
       			flex-wrap: wrap;

     

       46
       +
       			justify-content: center;

     

       47
       +
       		}

     

       48
       +
       		.control-row:last-child {

     

       49
       +
       			margin-bottom: 0;

     

       50
       +
       		}

     

       51
       +
       		button {

     

       52
       +
       			background: #11111b;

     

       53
       +
       			color: #a6e3a1;

     

       54
       +
       			border: 1px solid #313244;

     

       55
       +
       			padding: 8px 16px;

     

       56
       +
       			cursor: pointer;

     

       57
       +
       			font-family: inherit;

     

       58
       +
       			font-size: 14px;

     

       59
       +
       			border-radius: 3px;

     

       60
       +
       		}

     

       61
       +
       		button:hover {

     

       62
       +
       			background: #181825;

     

       63
       +
       		}

     

       64
       +
       		button:disabled {

     

       65
       +
       			opacity: 0.5;

     

       66
       +
       			cursor: not-allowed;

     

       67
       +
       		}

     

       68
       +
       		.speed-control {

     

       69
       +
       			display: flex;

     

       70
       +
       			align-items: center;

     

       71
       +
       			gap: 8px;

     

       72
       +
       			font-size: 13px;

     

       73
       +
       			color: #a6adc8;

     

       74
       +
       		}

     

       75
       +
       		.speed-control input[type="range"] {

     

       76
       +
       			width: 120px;

     

       77
       +
       			height: 6px;

     

       78
       +
       			background: #313244;

     

       79
       +
       			outline: none;

     

       80
       +
       			-webkit-appearance: none;

     

       81
       +
       			border-radius: 3px;

     

       82
       +
       		}

     

       83
       +
       		.speed-control input[type="range"]::-webkit-slider-thumb {

     

       84
       +
       			-webkit-appearance: none;

     

       85
       +
       			appearance: none;

     

       86
       +
       			width: 14px;

     

       87
       +
       			height: 14px;

     

       88
       +
       			background: #a6e3a1;

     

       89
       +
       			cursor: pointer;

     

       90
       +
       			border-radius: 50%;

     

       91
       +
       			border: 1px solid #313244;

     

       92
       +
       		}

     

       93
       +
       		.speed-control input[type="range"]::-moz-range-thumb {

     

       94
       +
       			width: 14px;

     

       95
       +
       			height: 14px;

     

       96
       +
       			background: #a6e3a1;

     

       97
       +
       			cursor: pointer;

     

       98
       +
       			border-radius: 50%;

     

       99
       +
       			border: 1px solid #313244;

     

       100
       +
       		}

     

       101
       +
       		.machine-display {

     

       102
       +
       			background: #11111b;

     

       103
       +
       			border: 1px solid #313244;

     

       104
       +
       			padding: 20px;

     

       105
       +
       			margin: 20px 0;

     

       106
       +
       			max-width: 1200px;

     

       107
       +
       			border-radius: 4px;

     

       108
       +
       			width: 100%;

     

       109
       +
       		}

     

       110
       +
       		.lights {

     

       111
       +
       			display: flex;

     

       112
       +
       			gap: 10px;

     

       113
       +
       			justify-content: center;

     

       114
       +
       			margin: 20px 0;

     

       115
       +
       			flex-wrap: wrap;

     

       116
       +
       		}

     

       117
       +
       		.light {

     

       118
       +
       			width: 50px;

     

       119
       +
       			height: 50px;

     

       120
       +
       			border-radius: 50%;

     

       121
       +
       			border: 2px solid #313244;

     

       122
       +
       			display: flex;

     

       123
       +
       			flex-direction: column;

     

       124
       +
       			align-items: center;

     

       125
       +
       			justify-content: center;

     

       126
       +
       			font-size: 9px;

     

       127
       +
       			transition: all 0.3s ease;

     

       128
       +
       			overflow: hidden;

     

       129
       +
       			text-align: center;

     

       130
       +
       			padding: 3px;

     

       131
       +
       			line-height: 1.1;

     

       132
       +
       		}

     

       133
       +
       		.light.off {

     

       134
       +
       			background: #1e1e2e;

     

       135
       +
       			color: #6c7086;

     

       136
       +
       		}

     

       137
       +
       		.light.on {

     

       138
       +
       			background: #a6e3a1;

     

       139
       +
       			color: #1e1e2e;

     

       140
       +
       			box-shadow: 0 0 10px #a6e3a1;

     

       141
       +
       		}

     

       142
       +
       		.light.target {

     

       143
       +
       			border-color: #f9e2af;

     

       144
       +
       			border-width: 3px;

     

       145
       +
       		}

     

       146
       +
       		.buttons-grid {

     

       147
       +
       			display: grid;

     

       148
       +
       			grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));

     

       149
       +
       			gap: 10px;

     

       150
       +
       			margin: 20px 0;

     

       151
       +
       		}

     

       152
       +
       		.button-display {

     

       153
       +
       			background: #181825;

     

       154
       +
       			border: 1px solid #313244;

     

       155
       +
       			padding: 10px;

     

       156
       +
       			border-radius: 4px;

     

       157
       +
       			text-align: center;

     

       158
       +
       			cursor: pointer;

     

       159
       +
       			transition: all 0.2s ease;

     

       160
       +
       		}

     

       161
       +
       		.button-display:hover {

     

       162
       +
       			background: #313244;

     

       163
       +
       		}

     

       164
       +
       		.button-display.pressed {

     

       165
       +
       			background: #a6e3a1;

     

       166
       +
       			color: #1e1e2e;

     

       167
       +
       			border-color: #a6e3a1;

     

       168
       +
       		}

     

       169
       +
       		.button-label {

     

       170
       +
       			font-size: 12px;

     

       171
       +
       			margin-bottom: 5px;

     

       172
       +
       			color: #a6adc8;

     

       173
       +
       		}

     

       174
       +
       		.button-toggles {

     

       175
       +
       			font-size: 11px;

     

       176
       +
       			color: #6c7086;

     

       177
       +
       		}

     

       178
       +
       		.stats {

     

       179
       +
       			background: #11111b;

     

       180
       +
       			border: 1px solid #313244;

     

       181
       +
       			padding: 10px 15px;

     

       182
       +
       			margin: 10px 0;

     

       183
       +
       			max-width: 1200px;

     

       184
       +
       			border-radius: 4px;

     

       185
       +
       			text-align: center;

     

       186
       +
       			font-size: 13px;

     

       187
       +
       			color: #a6adc8;

     

       188
       +
       			width: 100%;

     

       189
       +
       			margin-top: auto;

     

       190
       +
       		}

     

       191
       +
       		.info {

     

       192
       +
       			margin: 10px 0;

     

       193
       +
       			text-align: center;

     

       194
       +
       			color: #f9e2af;

     

       195
       +
       		}

     

       196
       +
       		a {

     

       197
       +
       			text-decoration: none;

     

       198
       +
       			color: #a6e3a1;

     

       199
       +
       			outline: 0;

     

       200
       +
       		}

     

       201
       +
       		a:hover, a:focus {

     

       202
       +
       			text-decoration: underline;

     

       203
       +
       		}

     

       204
       +
       	</style>

     

       205
       +
       </head>

     

       206
       +
       <body>

     

       207
       +
       	<h1>AoC 2025 Day 10 - Factory Machines</h1>

     

       208
       +
       	

     

       209
       +
       	<div class="controls">

     

       210
       +
       		<div class="control-row">

     

       211
       +
       			<button id="togglePart" style="color: #f9e2af; font-weight: bold;">Part 1</button>

     

       212
       +
       			<button id="prev">← Previous Machine</button>

     

       213
       +
       			<button id="play">▶ Play</button>

     

       214
       +
       			<button id="next">Next Machine →</button>

     

       215
       +
       			<button id="reset">↺ Reset</button>

     

       216
       +
       			<div class="speed-control">

     

       217
       +
       				<label for="speed">Speed:</label>

     

       218
       +
       				<input type="range" id="speed" min="1" max="25" value="5" step="1">

     

       219
       +
       				<span id="speedValue">5x</span>

     

       220
       +
       			</div>

     

       221
       +
       		</div>

     

       222
       +
       	</div>

     

       223
       +
       

     

       224
       +
       	<div class="info" id="machineInfo">Machine 1 / 197</div>

     

       225
       +
       

     

       226
       +
       	<div class="machine-display">

     

       227
       +
       		<h2 id="displayTitle" style="text-align: center; color: #89b4fa; font-size: 18px; margin-bottom: 20px;">Indicator Lights</h2>

     

       228
       +
       		<div class="lights" id="lights"></div>

     

       229
       +
       		

     

       230
       +
       		<h2 style="text-align: center; color: #89b4fa; font-size: 18px; margin: 30px 0 20px 0;">Buttons</h2>

     

       231
       +
       		<div class="buttons-grid" id="buttons"></div>

     

       232
       +
       	</div>

     

       233
       +
       

     

       234
       +
       	<div class="stats">

     

       235
       +
       		<div id="statsInfo">Buttons Pressed: 0 | Target: ? | Accumulated Total: 0</div>

     

       236
       +
       		<div style="margin-top: 5px; font-size: 11px;"><a href="../index.html">[Return to Index]</a></div>

     

       237
       +
       	</div>

     

       238
       +
       

     

       239
       +
       	<script type="module">

     

       240
       +
       		const machines = 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37,32,45,52,55,46,22]},{"target":[true,true,false,false,false,false,true,true,true,false],"buttons":[[2,6,8,9],[3,9],[2,4,6],[5,6,7],[4,7],[0,1,2,3,7],[2],[1,5,6,9],[0,1,3,6,8,9],[3,4,5,6],[1,2,3,4,5,6,8],[0,1,3,4,6,8],[9]],"joltages":[37,51,76,53,52,23,82,42,55,55]},{"target":[false,false,true,true,false],"buttons":[[2,3],[0,2,3,4],[1,3,4],[1,2,3,4]],"joltages":[8,18,34,37,26]},{"target":[true,true,false,true,false,false,false,false,true],"buttons":[[2,5],[0,1,2,5,8],[3,4,5,6,8],[1,2,3,4,6,7,8],[0,1,3,4,5,6,8],[1,4,7],[2,3,5,7,8],[1,2,3,5,7]],"joltages":[29,65,46,36,47,40,32,38,54]},{"target":[true,true,true,false,true,false,true],"buttons":[[2,5],[0,4],[2,3],[1,2],[2],[0,3,6],[0,2,6],[0,3],[0,1,4,5,6]],"joltages":[88,25,56,42,38,32,51]},{"target":[true,false,false,true,true,true,false,true,true],"buttons":[[0,1,4,5,6],[0,1,3,4,5,6,7,8],[0,1,2,7,8],[1,2,3,4,5],[0,3,8],[1,3,4,5,6,7],[4,6],[0,1,3,5,6,7],[8],[0,2,3,4,5,6,7],[1,7]],"joltages":[175,196,12,182,43,176,171,187,52]},{"target":[false,true,false,true,true,true,false,false],"buttons":[[2,4,5],[2,6,7],[2,4,5,6,7],[3,4],[0,3,4,5,7],[1,2,3,4,5,7],[5],[2,5,6],[1,3,4,5,6,7],[0,2,4,6,7]],"joltages":[14,25,37,189,194,64,34,47]},{"target":[false,true,true,false],"buttons":[[0,1],[0,2,3],[0,1,2],[1,2]],"joltages":[35,31,38,20]},{"target":[true,false,true,false,false,false,true],"buttons":[[0,1,4,5],[1,2,4],[0,1,4,6],[1,2,4,5,6],[0,2,6],[1,2,3],[3,4]],"joltages":[42,60,34,19,63,35,39]},{"target":[false,true,true,true,false,false,false],"buttons":[[4],[0,2,3,4,6],[0,1,2,3,4,5],[0,2,4,5,6],[0,1,3,4,5],[1,2,3]],"joltages":[37,35,20,36,44,36,3]},{"target":[true,false,true,false,false],"buttons":[[0,3],[2,3],[3,4],[0,3,4],[2,4],[0,1,3]],"joltages":[200,3,39,227,212]},{"target":[true,false,true,false,true,false,false,false],"buttons":[[2],[1,7],[0,3,4,6],[3],[1,4,5,6,7],[0,2,3,5,6]],"joltages":[33,211,25,52,29,30,46,211]},{"target":[false,false,false,false,true,true],"buttons":[[0,1,4,5],[0,1,5],[2,3,4],[1,3],[0,1,3],[1,2,5],[0],[1,2,3,4]],"joltages":[36,41,20,34,21,16]},{"target":[false,true,true,false,true,true,true,false,true,false],"buttons":[[0,2,3,4,9],[1,7],[1,2,3,5,6,7,8,9],[0,1,2,4,5,7,9],[3,4,5,6,7],[4,6],[2],[0,1,2,3,6,7,9],[0,6,7,8,9]],"joltages":[138,163,164,156,25,29,162,172,22,157]},{"target":[false,false,true,false,true,false],"buttons":[[0,1,2,4,5],[0,2,3],[0,2,5],[0,4,5]],"joltages":[53,2,34,19,21,34]},{"target":[true,false,false,false,true,true],"buttons":[[1,2,3,4],[0,3,5],[1,5],[0,1,4,5],[0,2,3,4,5],[0,2,3],[0,1,2,3]],"joltages":[32,41,28,39,15,30]},{"target":[true,true,false,true,true,true,false,false],"buttons":[[0,2,5,6],[0,5,6,7],[4,5,7],[1,3,6,7],[0,2,5,7],[1],[3,4,6,7],[0,6],[1,2,3,5]],"joltages":[30,45,38,45,35,55,43,64]},{"target":[false,true,false,true,false,false,true,false,false,false],"buttons":[[3,7],[0,4,5,9],[3,4,6,8],[0,1,2,3,5,6,8,9],[2,3,4,5,6,7,8,9],[8,9],[0,1,2,3,4,6,8],[0,1,2],[0,1,2,4,5,7,8,9],[0,1,3,4,6],[0,1,3,7,9],[0,1,6,7,8,9]],"joltages":[263,243,67,237,236,61,224,76,91,99]},{"target":[false,true,true,false,true,true],"buttons":[[0,2,3,5],[1],[0,1,2,4,5],[4,5],[1,3],[0],[0,2,3]],"joltages":[44,31,42,42,15,35]},{"target":[true,true,true,false],"buttons":[[1,3],[1,2],[0,2],[2],[2,3]],"joltages":[9,155,45,146]},{"target":[true,false,true,false,false,false,true,false,true,false],"buttons":[[0,1,2,5,6],[0,1,2,5,7],[1,2,4,5,6],[0,1,3,5,7,8,9],[2,3,4,5,6,8],[4,6],[0,1,2,3,4,5,6,8],[0,3,4,5,9],[5,6,7,8],[1,4,6,7,8],[2,3,8,9],[2,3,4,9],[0,1,2,4,5,7,8]],"joltages":[76,79,96,73,82,86,58,63,80,61]},{"target":[false,false,false,true,true,true],"buttons":[[0,3,4],[3,4,5],[0,1,4,5],[0,2,3,4]],"joltages":[34,10,10,32,42,18]},{"target":[false,false,true,true,false],"buttons":[[1,2,4],[0,2,3],[2,3]],"joltages":[17,7,28,21,7]},{"target":[false,true,true,true],"buttons":[[1,2,3],[0,2]],"joltages":[4,19,23,19]},{"target":[true,true,true,false],"buttons":[[2,3],[0,1,3],[0,1],[1,2]],"joltages":[15,32,30,26]},{"target":[false,false,true,false,true,false],"buttons":[[0,2,4],[3,4],[0,1,2,4,5],[0,1,3],[1,2,3,5]],"joltages":[37,29,33,31,48,21]},{"target":[true,true,true,false,false,true,true,true],"buttons":[[1,3,6],[0,1,2,3,4,5,7],[0,2,4,5,6,7],[1,2,6],[0,3,6],[1,5,7]],"joltages":[27,26,20,16,20,37,36,37]},{"target":[false,true,true,false],"buttons":[[2,3],[1,2],[0,3]],"joltages":[14,1,1,14]},{"target":[false,true,false,true,true,false,false,false,true],"buttons":[[3,4,5,6,8],[1,2,3,6,7,8],[1,2,3,5,6,7],[3,7],[2,3,4,5,6,7,8],[0,1,2,8],[0,3,4,5,7,8]],"joltages":[153,46,47,212,158,173,51,196,189]},{"target":[true,false,true,true,true,false],"buttons":[[0,1,4,5],[0,1,2,5],[1,2,3],[1,2,3,4,5],[0,2,3,5],[0,3,4],[1,2],[2,3,4,5]],"joltages":[220,54,54,223,212,30]},{"target":[true,false,true,true,true,true],"buttons":[[1,2,3,5],[0,1,5],[1,2,3,4],[0,2,3,4],[2,3]],"joltages":[21,25,36,36,20,14]},{"target":[false,false,false,true,false,false,false,false,true,true],"buttons":[[0,9],[4,5,6],[0,2,4,6,7,9],[0,2,3,4,7,8,9],[0,1,4,7],[0,3,7,8],[8,9],[0,7,8],[0,1,2,5,6,7]],"joltages":[65,26,36,8,49,35,47,46,18,49]},{"target":[false,true,true,true,true,false,true,true],"buttons":[[1,2,3,5,6,7],[0,1,3,4,6,7],[1,2,3,4,5,6],[0,2,4,7],[1,3,5],[3,4,5,6,7],[4,7],[0,1,4,6,7],[0,7]],"joltages":[19,35,12,42,55,27,40,46]},{"target":[false,true,false,true,true,true],"buttons":[[0,2,3,5],[1,3,4,5],[0,1,2,4],[1,5],[1,2,3,5]],"joltages":[29,50,39,38,35,43]},{"target":[false,false,true,false,false,true,true,false,true],"buttons":[[2,3,8],[1,5],[1,4,5,6,7,8],[1,3,4,5,7,8],[2,3,4,5,7],[0,1,3,4],[0,1,3,4,6],[0,2,3,4,5,7,8]],"joltages":[28,173,36,70,64,171,30,46,60]},{"target":[false,true,true,false],"buttons":[[1],[0,2,3],[1,2]],"joltages":[3,11,10,3]},{"target":[true,false,true,false,false,false,false,true,true],"buttons":[[1,2,3,8],[1,2,3,4,5],[0,1,3,7],[0,1,2,3,6,7],[0,1,2,3,7,8],[4],[1,2,3,4,5,7,8]],"joltages":[27,49,45,49,31,19,6,42,35]},{"target":[true,true,false,false],"buttons":[[1],[0,1,2],[2,3],[0]],"joltages":[22,19,28,9]},{"target":[true,true,false,false,true,true,true],"buttons":[[1,2,3,4,5],[2,3,4,5],[0,2,4,5],[1,4],[0,2,4],[3],[0,1,3,6],[1,3,6]],"joltages":[37,171,27,179,33,24,158]},{"target":[false,true,true,true,true,false],"buttons":[[1,2,3,4],[0,4],[0,1,3],[1,2,3],[2,3,4,5],[1,2,3,4,5],[0,2]],"joltages":[44,38,47,45,44,21]},{"target":[false,true,true,false,true,false,false,false,true],"buttons":[[1,6,8],[2,3,4,5,8],[0,1,2,3,6,8],[0,2,3,4,7,8],[5,7],[0,1,2,3,4,5,8],[1,3,4,5],[0,1,4],[1,2,3,6,7,8],[4,5,6,7],[0,1,2,4,5,6,8]],"joltages":[59,172,61,70,85,56,141,54,164]},{"target":[false,true,true,false,false,false,false,false,false],"buttons":[[7,8],[3,5],[1,2],[1,3,5,6,8],[2,3,4,5,6],[0,4,7,8],[2,4],[1,2,3,4,5,6,7]],"joltages":[4,35,43,56,44,56,47,41,33]},{"target":[true,false,false,false,false,true,false,false,false,false],"buttons":[[0,1,2,3,4,5,7,8,9],[2,4,5,9],[3,5,6],[3,9],[0,3,5,9],[0,1,4],[0,1,3,5,6,8],[0,1,2,4,5,6,7,8],[0,2,5,6,7,8,9],[0,1,3,6,8,9],[4,6,8]],"joltages":[217,50,191,56,54,220,203,176,191,209]},{"target":[false,true,false,false,true,false],"buttons":[[0,2,4],[1,3],[1,3,5],[1,2,3,5],[0,1,2,3],[3],[0,3,4,5]],"joltages":[145,21,28,151,139,132]},{"target":[true,false,false,true,true,true],"buttons":[[3,4],[2],[1,3,5],[1,2,3,5],[0,1,2],[0,2,4,5],[0,2,3,4],[0,2,3]],"joltages":[42,19,63,44,38,13]},{"target":[true,false,true,false,false,false,false,false,false],"buttons":[[0,2,4,6,7],[0,3,4,6,8],[0,3,4,5,8],[0,1,4,6],[2,4,5],[2,3,5],[1,3,5,7],[3,8]],"joltages":[32,17,39,53,46,56,18,25,25]},{"target":[true,true,true,false,false,false,false,false,false,true],"buttons":[[0,1,2,5],[5,6,9],[0,2,8,9],[0,2,3,5],[2],[0,1,2,3,4,5,6,7],[0,1,2,3,5,6,7,9],[7],[0,3,4]],"joltages":[73,56,84,44,19,78,52,49,9,44]},{"target":[true,false,true,true],"buttons":[[1,2],[2],[0,1,3],[0,1,2]],"joltages":[21,27,190,4]},{"target":[false,false,false,true,false,false,true,false,true,true],"buttons":[[0,2,3,4,6,7,8,9],[0,2,3,4,8,9],[0,1,2,5,6,8,9],[2,3],[0,1,2,5,6,7,8],[1,2,5,8],[0,1,2,3,5,7,8,9],[2,7],[0,3,8,9],[2,4,9]],"joltages":[36,32,70,37,11,32,14,33,37,42]}];

     

       241
       +
       		

     

       242
       +
       		let currentMode = 1; // 1 or 2

     

       243
       +
       		let currentMachineIndex = 0;

     

       244
       +
       		let currentState = [];

     

       245
       +
       		let buttonStates = []; // Track which buttons are "on" (pressed odd number of times)

     

       246
       +
       		let isPlaying = false;

     

       247
       +
       		let showingSolution = false;

     

       248
       +
       		let solutionSteps = [];

     

       249
       +
       		let currentStep = 0;

     

       250
       +
       		let solvedMachines = new Set(); // Track which machines have been solved

     

       251
       +
       		let animationSpeed = 200; // ms between button presses (default 5x)

     

       252
       +
       

     

       253
       +
       

     

       254
       +
       		function renderMachine() {

     

       255
       +
       			const machine = machines[currentMachineIndex];

     

       256
       +
       			

     

       257
       +
       			// Update title based on mode

     

       258
       +
       			const titleEl = document.getElementById('displayTitle');

     

       259
       +
       			if (currentMode === 1) {

     

       260
       +
       				titleEl.textContent = 'Indicator Lights';

     

       261
       +
       				titleEl.style.color = '#89b4fa';

     

       262
       +
       			} else {

     

       263
       +
       				titleEl.textContent = 'Joltage Counters';

     

       264
       +
       				titleEl.style.color = '#f9e2af';

     

       265
       +
       			}

     

       266
       +
       			

     

       267
       +
       			// Render lights or counters

     

       268
       +
       			const lightsDiv = document.getElementById('lights');

     

       269
       +
       			lightsDiv.innerHTML = '';

     

       270
       +
       			

     

       271
       +
       			if (currentMode === 1) {

     

       272
       +
       				// Part 1: Indicator lights

     

       273
       +
       				machine.target.forEach((target, i) => {

     

       274
       +
       					const light = document.createElement('div');

     

       275
       +
       					light.className = `light ${currentState[i] ? 'on' : 'off'} ${target ? 'target' : ''}`;

     

       276
       +
       					light.textContent = i;

     

       277
       +
       					lightsDiv.appendChild(light);

     

       278
       +
       				});

     

       279
       +
       			} else {

     

       280
       +
       				// Part 2: Joltage counters

     

       281
       +
       				machine.joltages.forEach((target, i) => {

     

       282
       +
       					const counter = document.createElement('div');

     

       283
       +
       					const current = currentState[i] || 0;

     

       284
       +
       					const isTarget = current === target;

     

       285
       +
       					counter.className = `light ${isTarget ? 'on' : 'off'} ${true ? 'target' : ''}`;

     

       286
       +
       					counter.innerHTML = `<div style="font-size: 7px; opacity: 0.7;">[${i}]</div><div style="font-size: 10px; font-weight: bold;">${current}/<span style="color: #f9e2af;">${target}</span></div>`;

     

       287
       +
       					lightsDiv.appendChild(counter);

     

       288
       +
       				});

     

       289
       +
       			}

     

       290
       +
       

     

       291
       +
       			// Render buttons

     

       292
       +
       			const buttonsDiv = document.getElementById('buttons');

     

       293
       +
       			buttonsDiv.innerHTML = '';

     

       294
       +
       			machine.buttons.forEach((toggles, i) => {

     

       295
       +
       				const btn = document.createElement('div');

     

       296
       +
       				const pressCount = buttonStates[i] || 0;

     

       297
       +
       				const isPressed = currentMode === 1 ? (pressCount % 2 === 1) : (pressCount > 0);

     

       298
       +
       				btn.className = `button-display ${isPressed ? 'pressed' : ''}`;

     

       299
       +
       				btn.innerHTML = `

     

       300
       +
       					<div class="button-label">Button ${i}${currentMode === 2 ? ` (${pressCount})` : ''}</div>

     

       301
       +
       					<div class="button-toggles">Affects: ${toggles.join(', ')}</div>

     

       302
       +
       				`;

     

       303
       +
       				btn.addEventListener('click', () => toggleButton(i));

     

       304
       +
       				buttonsDiv.appendChild(btn);

     

       305
       +
       			});

     

       306
       +
       		}

     

       307
       +
       

     

       308
       +
       		function toggleButton(buttonIndex) {

     

       309
       +
       			const machine = machines[currentMachineIndex];

     

       310
       +
       			

     

       311
       +
       			if (currentMode === 1) {

     

       312
       +
       				// Part 1: Toggle lights (XOR)

     

       313
       +
       				buttonStates[buttonIndex] = buttonStates[buttonIndex] ? 0 : 1;

     

       314
       +
       				machine.buttons[buttonIndex].forEach(lightIndex => {

     

       315
       +
       					currentState[lightIndex] = !currentState[lightIndex];

     

       316
       +
       				});

     

       317
       +
       			} else {

     

       318
       +
       				// Part 2: Increment counters

     

       319
       +
       				buttonStates[buttonIndex] = (buttonStates[buttonIndex] || 0) + 1;

     

       320
       +
       				machine.buttons[buttonIndex].forEach(counterIndex => {

     

       321
       +
       					currentState[counterIndex] = (currentState[counterIndex] || 0) + 1;

     

       322
       +
       				});

     

       323
       +
       			}

     

       324
       +
       			

     

       325
       +
       			renderMachine();

     

       326
       +
       			updateStats();

     

       327
       +
       		}

     

       328
       +
       

     

       329
       +
       		function solveMachine(machine) {

     

       330
       +
       			const n = machine.target.length;

     

       331
       +
       			const m = machine.buttons.length;

     

       332
       +
       

     

       333
       +
       			const matrix = [];

     

       334
       +
       			for (let i = 0; i < n; i++) {

     

       335
       +
       				const row = [];

     

       336
       +
       				for (let j = 0; j < m; j++) {

     

       337
       +
       					row.push(machine.buttons[j].includes(i) ? 1 : 0);

     

       338
       +
       				}

     

       339
       +
       				row.push(machine.target[i] ? 1 : 0);

     

       340
       +
       				matrix.push(row);

     

       341
       +
       			}

     

       342
       +
       

     

       343
       +
       			const pivotCols = [];

     

       344
       +
       			for (let col = 0; col < m; col++) {

     

       345
       +
       				let pivotRow = -1;

     

       346
       +
       				for (let row = pivotCols.length; row < n; row++) {

     

       347
       +
       					if (matrix[row][col] === 1) {

     

       348
       +
       						pivotRow = row;

     

       349
       +
       						break;

     

       350
       +
       					}

     

       351
       +
       				}

     

       352
       +
       

     

       353
       +
       				if (pivotRow === -1) continue;

     

       354
       +
       

     

       355
       +
       				const targetRow = pivotCols.length;

     

       356
       +
       				if (pivotRow !== targetRow) {

     

       357
       +
       					[matrix[pivotRow], matrix[targetRow]] = [matrix[targetRow], matrix[pivotRow]];

     

       358
       +
       				}

     

       359
       +
       

     

       360
       +
       				pivotCols.push(col);

     

       361
       +
       

     

       362
       +
       				for (let row = 0; row < n; row++) {

     

       363
       +
       					if (row !== targetRow && matrix[row][col] === 1) {

     

       364
       +
       						for (let c = 0; c <= m; c++) {

     

       365
       +
       							matrix[row][c] ^= matrix[targetRow][c];

     

       366
       +
       						}

     

       367
       +
       					}

     

       368
       +
       				}

     

       369
       +
       			}

     

       370
       +
       

     

       371
       +
       			const solution = new Array(m).fill(0);

     

       372
       +
       			for (let i = pivotCols.length - 1; i >= 0; i--) {

     

       373
       +
       				const col = pivotCols[i];

     

       374
       +
       				solution[col] = matrix[i][m];

     

       375
       +
       				for (let j = col + 1; j < m; j++) {

     

       376
       +
       					if (matrix[i][j] === 1) {

     

       377
       +
       						solution[col] ^= solution[j];

     

       378
       +
       					}

     

       379
       +
       				}

     

       380
       +
       			}

     

       381
       +
       

     

       382
       +
       			return solution;

     

       383
       +
       		}

     

       384
       +
       

     

       385
       +
       		// Part 2 solver (copy of server-side logic)

     

       386
       +
       		function solveMachinePart2(machine) {

     

       387
       +
       			const n = machine.joltages.length;

     

       388
       +
       			const m = machine.buttons.length;

     

       389
       +
       			const target = machine.joltages;

     

       390
       +
       

     

       391
       +
       			const A = [];

     

       392
       +
       			for (let i = 0; i < n; i++) {

     

       393
       +
       				const row = [];

     

       394
       +
       				for (let j = 0; j < m; j++) {

     

       395
       +
       					row.push(machine.buttons[j].includes(i) ? 1 : 0);

     

       396
       +
       				}

     

       397
       +
       				A.push(row);

     

       398
       +
       			}

     

       399
       +
       

     

       400
       +
       			const matrix = [];

     

       401
       +
       			for (let i = 0; i < n; i++) {

     

       402
       +
       				matrix.push([...A[i], target[i]]);

     

       403
       +
       			}

     

       404
       +
       

     

       405
       +
       			const pivotCols = [];

     

       406
       +
       			for (let col = 0; col < m; col++) {

     

       407
       +
       				let pivotRow = -1;

     

       408
       +
       				for (let row = pivotCols.length; row < n; row++) {

     

       409
       +
       					if (matrix[row][col] !== 0) {

     

       410
       +
       						pivotRow = row;

     

       411
       +
       						break;

     

       412
       +
       					}

     

       413
       +
       				}

     

       414
       +
       

     

       415
       +
       				if (pivotRow === -1) continue;

     

       416
       +
       

     

       417
       +
       				const targetRow = pivotCols.length;

     

       418
       +
       				if (pivotRow !== targetRow) {

     

       419
       +
       					[matrix[pivotRow], matrix[targetRow]] = [matrix[targetRow], matrix[pivotRow]];

     

       420
       +
       				}

     

       421
       +
       

     

       422
       +
       				pivotCols.push(col);

     

       423
       +
       

     

       424
       +
       				const pivot = matrix[targetRow][col];

     

       425
       +
       				for (let c = 0; c <= m; c++) {

     

       426
       +
       					matrix[targetRow][c] /= pivot;

     

       427
       +
       				}

     

       428
       +
       

     

       429
       +
       				for (let row = 0; row < n; row++) {

     

       430
       +
       					if (row !== targetRow && matrix[row][col] !== 0) {

     

       431
       +
       						const factor = matrix[row][col];

     

       432
       +
       						for (let c = 0; c <= m; c++) {

     

       433
       +
       							matrix[row][c] -= factor * matrix[targetRow][c];

     

       434
       +
       						}

     

       435
       +
       					}

     

       436
       +
       				}

     

       437
       +
       			}

     

       438
       +
       

     

       439
       +
       			const isPivot = new Array(m).fill(false);

     

       440
       +
       			pivotCols.forEach(col => isPivot[col] = true);

     

       441
       +
       			const freeVars = [];

     

       442
       +
       			for (let j = 0; j < m; j++) {

     

       443
       +
       				if (!isPivot[j]) freeVars.push(j);

     

       444
       +
       			}

     

       445
       +
       

     

       446
       +
       			if (freeVars.length > 8) { // Reduced limit for browser

     

       447
       +
       				return new Array(m).fill(0);

     

       448
       +
       			}

     

       449
       +
       

     

       450
       +
       			let minPresses = Infinity;

     

       451
       +
       			let bestSolution = [];

     

       452
       +
       

     

       453
       +
       			const maxTarget = Math.max(...target);

     

       454
       +
       			const maxFreeValue = Math.min(maxTarget * 2, 100);

     

       455
       +
       

     

       456
       +
       			function searchFreeVars(idx, currentSol) {

     

       457
       +
       				if (idx === freeVars.length) {

     

       458
       +
       					const sol = [...currentSol];

     

       459
       +
       					let valid = true;

     

       460
       +
       					for (let i = pivotCols.length - 1; i >= 0; i--) {

     

       461
       +
       						const col = pivotCols[i];

     

       462
       +
       						let val = matrix[i][m];

     

       463
       +
       						for (let j = col + 1; j < m; j++) {

     

       464
       +
       							val -= matrix[i][j] * sol[j];

     

       465
       +
       						}

     

       466
       +
       						sol[col] = val;

     

       467
       +
       

     

       468
       +
       						if (val < -1e-9 || Math.abs(val - Math.round(val)) > 1e-9) {

     

       469
       +
       							valid = false;

     

       470
       +
       							break;

     

       471
       +
       						}

     

       472
       +
       					}

     

       473
       +
       

     

       474
       +
       					if (valid) {

     

       475
       +
       						const intSol = sol.map(x => Math.round(Math.max(0, x)));

     

       476
       +
       						const presses = intSol.reduce((sum, x) => sum + x, 0);

     

       477
       +
       						if (presses < minPresses) {

     

       478
       +
       							minPresses = presses;

     

       479
       +
       							bestSolution = intSol;

     

       480
       +
       						}

     

       481
       +
       					}

     

       482
       +
       					return;

     

       483
       +
       				}

     

       484
       +
       

     

       485
       +
       				for (let val = 0; val <= maxFreeValue; val++) {

     

       486
       +
       					currentSol[freeVars[idx]] = val;

     

       487
       +
       					searchFreeVars(idx + 1, currentSol);

     

       488
       +
       				}

     

       489
       +
       			}

     

       490
       +
       

     

       491
       +
       			searchFreeVars(0, new Array(m).fill(0));

     

       492
       +
       			return bestSolution;

     

       493
       +
       		}

     

       494
       +
       

     

       495
       +
       		function getCurrentSolution() {

     

       496
       +
       			const machine = machines[currentMachineIndex];

     

       497
       +
       			return currentMode === 1 ? solveMachine(machine) : solveMachinePart2(machine);

     

       498
       +
       		}

     

       499
       +
       

     

       500
       +
       		function showSolution() {

     

       501
       +
       			const machine = machines[currentMachineIndex];

     

       502
       +
       			const solution = getCurrentSolution();

     

       503
       +
       			

     

       504
       +
       			if (currentMode === 1) {

     

       505
       +
       				currentState = new Array(machine.target.length).fill(false);

     

       506
       +
       				buttonStates = [...solution].map(v => v === 1);

     

       507
       +
       				

     

       508
       +
       				solution.forEach((shouldPress, buttonIndex) => {

     

       509
       +
       					if (shouldPress === 1) {

     

       510
       +
       						machine.buttons[buttonIndex].forEach(lightIndex => {

     

       511
       +
       							currentState[lightIndex] = !currentState[lightIndex];

     

       512
       +
       						});

     

       513
       +
       					}

     

       514
       +
       				});

     

       515
       +
       			} else {

     

       516
       +
       				currentState = new Array(machine.joltages.length).fill(0);

     

       517
       +
       				buttonStates = [...solution];

     

       518
       +
       				

     

       519
       +
       				solution.forEach((pressCount, buttonIndex) => {

     

       520
       +
       					for (let p = 0; p < pressCount; p++) {

     

       521
       +
       						machine.buttons[buttonIndex].forEach(counterIndex => {

     

       522
       +
       							currentState[counterIndex]++;

     

       523
       +
       						});

     

       524
       +
       					}

     

       525
       +
       				});

     

       526
       +
       			}

     

       527
       +
       			

     

       528
       +
       			showingSolution = true;

     

       529
       +
       			renderMachine();

     

       530
       +
       			updateStats();

     

       531
       +
       		}

     

       532
       +
       

     

       533
       +
       		function updateStats() {

     

       534
       +
       			const machine = machines[currentMachineIndex];

     

       535
       +
       			const solution = getCurrentSolution();

     

       536
       +
       			const minPresses = solution.reduce((a, b) => a + b, 0);

     

       537
       +
       			

     

       538
       +
       			let totalPressed;

     

       539
       +
       			if (currentMode === 1) {

     

       540
       +
       				totalPressed = buttonStates.filter(b => b).length;

     

       541
       +
       			} else {

     

       542
       +
       				totalPressed = buttonStates.reduce((sum, count) => sum + (count || 0), 0);

     

       543
       +
       			}

     

       544
       +
       			

     

       545
       +
       			// Calculate accumulated total for solved machines

     

       546
       +
       			let accumulatedTotal = 0;

     

       547
       +
       			solvedMachines.forEach(idx => {

     

       548
       +
       				const m = machines[idx];

     

       549
       +
       				const sol = currentMode === 1 ? solveMachine(m) : solveMachinePart2(m);

     

       550
       +
       				accumulatedTotal += sol.reduce((a, b) => a + b, 0);

     

       551
       +
       			});

     

       552
       +
       			

     

       553
       +
       			document.getElementById('statsInfo').textContent = `Buttons Pressed: ${totalPressed} | Target: ${minPresses} | Accumulated Total: ${accumulatedTotal}`;

     

       554
       +
       			document.getElementById('machineInfo').textContent = `Machine ${currentMachineIndex + 1} / ${machines.length}`;

     

       555
       +
       		}

     

       556
       +
       

     

       557
       +
       		document.getElementById('prev').addEventListener('click', () => {

     

       558
       +
       			if (currentMachineIndex > 0) {

     

       559
       +
       				isPlaying = false;

     

       560
       +
       				document.getElementById('play').textContent = '▶ Play';

     

       561
       +
       				currentMachineIndex--;

     

       562
       +
       				initMachine();

     

       563
       +
       			}

     

       564
       +
       		});

     

       565
       +
       

     

       566
       +
       		document.getElementById('next').addEventListener('click', () => {

     

       567
       +
       			if (currentMachineIndex < machines.length - 1) {

     

       568
       +
       				isPlaying = false;

     

       569
       +
       				document.getElementById('play').textContent = '▶ Play';

     

       570
       +
       				currentMachineIndex++;

     

       571
       +
       				initMachine();

     

       572
       +
       			}

     

       573
       +
       		});

     

       574
       +
       

     

       575
       +
       		document.getElementById('reset').addEventListener('click', initMachine);

     

       576
       +
       

     

       577
       +
       		document.getElementById('togglePart').addEventListener('click', () => {

     

       578
       +
       			currentMode = currentMode === 1 ? 2 : 1;

     

       579
       +
       			document.getElementById('togglePart').textContent = `Part ${currentMode}`;

     

       580
       +
       			solvedMachines.clear();

     

       581
       +
       			initMachine();

     

       582
       +
       		});

     

       583
       +
       

     

       584
       +
       		document.getElementById('play').addEventListener('click', () => {

     

       585
       +
       			isPlaying = !isPlaying;

     

       586
       +
       			document.getElementById('play').textContent = isPlaying ? '⏸ Pause' : '▶ Play';

     

       587
       +
       			if (isPlaying) {

     

       588
       +
       				animateSolution();

     

       589
       +
       			}

     

       590
       +
       		});

     

       591
       +
       

     

       592
       +
       		// Speed control

     

       593
       +
       		const speedSlider = document.getElementById('speed');

     

       594
       +
       		const speedValue = document.getElementById('speedValue');

     

       595
       +
       		speedSlider.addEventListener('input', (e) => {

     

       596
       +
       			const speed = parseInt(e.target.value);

     

       597
       +
       			speedValue.textContent = `${speed}x`;

     

       598
       +
       			// Faster speed = shorter delay (inverse relationship)

     

       599
       +
       			animationSpeed = 1000 / speed;

     

       600
       +
       		});

     

       601
       +
       

     

       602
       +
       		function animateSolution() {

     

       603
       +
       			if (!isPlaying) return;

     

       604
       +
       			

     

       605
       +
       			if (currentStep < solutionSteps.length) {

     

       606
       +
       				// Toggle the next button in the solution

     

       607
       +
       				const buttonIndex = solutionSteps[currentStep];

     

       608
       +
       				toggleButton(buttonIndex);

     

       609
       +
       				currentStep++;

     

       610
       +
       				

     

       611
       +
       				// Use 10x faster speed for Part 2 (more button presses)

     

       612
       +
       				const delay = currentMode === 2 ? animationSpeed / 10 : animationSpeed;

     

       613
       +
       				setTimeout(animateSolution, delay);

     

       614
       +
       			} else {

     

       615
       +
       				// Mark this machine as solved

     

       616
       +
       				const machine = machines[currentMachineIndex];

     

       617
       +
       				let isCorrect;

     

       618
       +
       				if (currentMode === 1) {

     

       619
       +
       					isCorrect = currentState.every((state, i) => state === machine.target[i]);

     

       620
       +
       				} else {

     

       621
       +
       					isCorrect = currentState.every((state, i) => state === machine.joltages[i]);

     

       622
       +
       				}

     

       623
       +
       				

     

       624
       +
       				if (isCorrect) {

     

       625
       +
       					solvedMachines.add(currentMachineIndex);

     

       626
       +
       					updateStats();

     

       627
       +
       				}

     

       628
       +
       				

     

       629
       +
       				// Current machine done, move to next immediately

     

       630
       +
       				if (currentMachineIndex < machines.length - 1) {

     

       631
       +
       					if (isPlaying) {

     

       632
       +
       						currentMachineIndex++;

     

       633
       +
       						initMachine();

     

       634
       +
       						setTimeout(animateSolution, animationSpeed);

     

       635
       +
       					}

     

       636
       +
       				} else {

     

       637
       +
       					// All done

     

       638
       +
       					isPlaying = false;

     

       639
       +
       					document.getElementById('play').textContent = '▶ Play';

     

       640
       +
       					setTimeout(() => {

     

       641
       +
       						currentMachineIndex = 0;

     

       642
       +
       						initMachine();

     

       643
       +
       					}, animationSpeed * 4);

     

       644
       +
       				}

     

       645
       +
       			}

     

       646
       +
       		}

     

       647
       +
       

     

       648
       +
       		function initMachine() {

     

       649
       +
       			const machine = machines[currentMachineIndex];

     

       650
       +
       			showingSolution = false;

     

       651
       +
       			currentStep = 0;

     

       652
       +
       			

     

       653
       +
       			if (currentMode === 1) {

     

       654
       +
       				// Part 1

     

       655
       +
       				currentState = new Array(machine.target.length).fill(false);

     

       656
       +
       				buttonStates = new Array(machine.buttons.length).fill(0);

     

       657
       +
       				

     

       658
       +
       				const solution = solveMachine(machine);

     

       659
       +
       				solutionSteps = [];

     

       660
       +
       				solution.forEach((shouldPress, idx) => {

     

       661
       +
       					if (shouldPress === 1) {

     

       662
       +
       						solutionSteps.push(idx);

     

       663
       +
       					}

     

       664
       +
       				});

     

       665
       +
       			} else {

     

       666
       +
       				// Part 2

     

       667
       +
       				currentState = new Array(machine.joltages.length).fill(0);

     

       668
       +
       				buttonStates = new Array(machine.buttons.length).fill(0);

     

       669
       +
       				

     

       670
       +
       				const solution = solveMachinePart2(machine);

     

       671
       +
       				solutionSteps = [];

     

       672
       +
       				solution.forEach((pressCount, idx) => {

     

       673
       +
       					for (let i = 0; i < pressCount; i++) {

     

       674
       +
       						solutionSteps.push(idx);

     

       675
       +
       					}

     

       676
       +
       				});

     

       677
       +
       			}

     

       678
       +
       			

     

       679
       +
       			renderMachine();

     

       680
       +
       			updateStats();

     

       681
       +
       		}

     

       682
       +
       

     

       683
       +
       		// Initialize

     

       684
       +
       		initMachine();

     

       685
       +
       	</script>

     

       686
       +
       </body>

     

       687
       +
       </html>