commit 634ae8ef6302ce1a58aa5add3ec50bc2f78ad456 · hauleth.dev/advent-of-code

2021/day1.livemd 2021/day01.livemd

2021/day1.txt 2021/day01.txt

+19 -6

2021/day19.livemd

···

       28
        
       length(input)

     

       29
        
       ```

     

       30
        
       

     

       31
       -
       ```output

     

       0
        
       
     

       0
        
       
     

       32
        
       34

     

       33
        
       ```

     

       34
        
       

     
···

       105
        
       {a_2}_d & 1

     

       106
        
       \end{vmatrix}

     

       107
        
       } = \frac{{a_1}_d {b_2}_d - {b_1}_d {a_2}_d}{{a_1}_d - {a_2}_d}

     

       0
        
       
     

       108
        
       

     

       109
        
       ```elixir

     

       110
        
       defmodule Day19 do

     
···

       204
        
       end

     

       205
        
       ```

     

       206
        
       

     

       207
       -
       ```output

     

       0
        
       
     

       0
        
       
     

       208
        
       {:module, Day19, <<70, 79, 82, 49, 0, 0, 26, ...>>, {:pairs, 1}}

     

       209
        
       ```

     

       210
        
       

     
···

       225
        
       {length(joinable), length(later)}

     

       226
        
       ```

     

       227
        
       

     

       228
       -
       ```output

     

       0
        
       
     

       0
        
       
     

       229
        
       {3, 30}

     

       230
        
       ```

     

       231
        
       

     
···

       272
        
       MapSet.size(points_set)

     

       273
        
       ```

     

       274
        
       

     

       275
       -
       ```output

     

       0
        
       
     

       0
        
       
     

       276
        
       0.002822

     

       277
        
       1: {5, 25}

     

       278
        
       0.017052

     
···

       290
        
       0.071942

     

       291
        
       ```

     

       292
        
       

     

       293
       -
       ```output

     

       0
        
       
     

       0
        
       
     

       294
        
       396

     

       295
        
       ```

     

       296
        
       

     
···

       303
        
       |> Enum.max()

     

       304
        
       ```

     

       305
        
       

     

       306
       -
       ```output

     

       0
        
       
     

       0
        
       
     

       307
        
       11828

     

       308
        
       ```

···

       28
        
       length(input)

     

       29
        
       ```

     

       30
        
       

     

       31
       +
       <!-- livebook:{"output":true} -->

     

       32
       +
       

     

       33
       +
       ```

     

       34
        
       34

     

       35
        
       ```

     

       36
        
       

     
···

       107
        
       {a_2}_d & 1

     

       108
        
       \end{vmatrix}

     

       109
        
       } = \frac{{a_1}_d {b_2}_d - {b_1}_d {a_2}_d}{{a_1}_d - {a_2}_d}

     

       110
       +
       $$

     

       111
        
       

     

       112
        
       ```elixir

     

       113
        
       defmodule Day19 do

     
···

       207
        
       end

     

       208
        
       ```

     

       209
        
       

     

       210
       +
       <!-- livebook:{"output":true} -->

     

       211
       +
       

     

       212
       +
       ```

     

       213
        
       {:module, Day19, <<70, 79, 82, 49, 0, 0, 26, ...>>, {:pairs, 1}}

     

       214
        
       ```

     

       215
        
       

     
···

       230
        
       {length(joinable), length(later)}

     

       231
        
       ```

     

       232
        
       

     

       233
       +
       <!-- livebook:{"output":true} -->

     

       234
       +
       

     

       235
       +
       ```

     

       236
        
       {3, 30}

     

       237
        
       ```

     

       238
        
       

     
···

       279
        
       MapSet.size(points_set)

     

       280
        
       ```

     

       281
        
       

     

       282
       +
       <!-- livebook:{"output":true} -->

     

       283
       +
       

     

       284
       +
       ```

     

       285
        
       0.002822

     

       286
        
       1: {5, 25}

     

       287
        
       0.017052

     
···

       299
        
       0.071942

     

       300
        
       ```

     

       301
        
       

     

       302
       +
       <!-- livebook:{"output":true} -->

     

       303
       +
       

     

       304
       +
       ```

     

       305
        
       396

     

       306
        
       ```

     

       307
        
       

     
···

       314
        
       |> Enum.max()

     

       315
        
       ```

     

       316
        
       

     

       317
       +
       <!-- livebook:{"output":true} -->

     

       318
       +
       

     

       319
       +
       ```

     

       320
        
       11828

     

       321
        
       ```

2021/day2.livemd 2021/day02.livemd

2021/day2.txt 2021/day02.txt

+149

2021/day23.livemd

···

       1
       +
       <!-- vim:ft=markdown -->

     

       2
       +
       

     

       3
       +
       <!-- livebook:{"persist_outputs":true} -->

     

       4
       +
       

     

       5
       +
       # Day 23

     

       6
       +
       

     

       7
       +
       ## Section

     

       8
       +
       

     

       9
       +
       ```elixir

     

       10
       +
       input =

     

       11
       +
         File.stream!("day23.txt")

     

       12
       +
         |> Enum.map(fn line ->

     

       13
       +
           for <<c <- line>>, c in 'ABCD', do: String.to_atom(<<c + 32>>)

     

       14
       +
         end)

     

       15
       +
         |> Enum.reject(&(&1 == []))

     

       16
       +
         |> Enum.zip()

     

       17
       +
         |> Enum.map(&Tuple.to_list/1)

     

       18
       +
         |> Enum.zip_with(~w[a b c d]a, &{&2, &1})

     

       19
       +
         |> Map.new()

     

       20
       +
       ```

     

       21
       +
       

     

       22
       +
       ```output

     

       23
       +
       %{a: [:d, :b], b: [:d, :a], c: [:c, :b], d: [:c, :a]}

     

       24
       +
       ```

     

       25
       +
       

     

       26
       +
       Graph of the possible movements. `--` and `|` have multiply 1 and `---`, `\`, and `/` have

     

       27
       +
       multiply 2.

     

       28
       +
       

     

       29
       +
       ```

     

       30
       +
       .--.---.---.---.---.--.

     

       31
       +
           \ / \ / \ / \ /

     

       32
       +
            .   .   .   .

     

       33
       +
            |   |   |   |

     

       34
       +
            .   .   .   .

     

       35
       +
       ```

     

       36
       +
       

     

       37
       +
       ```elixir

     

       38
       +
       defmodule Day23 do

     

       39
       +
         @costs %{a: 1, b: 10, c: 100, d: 1000}

     

       40
       +
         @rooms %{a: -3, b: -1, c: 1, d: 3}

     

       41
       +
       

     

       42
       +
         # - - - - -   + + + + +

     

       43
       +
         # 5 4 3 2 1 0 1 2 3 4 5

     

       44
       +
         #     A   B   C   D

     

       45
       +
         #     A   B   C   D

     

       46
       +
       

     

       47
       +
         defp memoize(tid, args, func) do

     

       48
       +
           case :ets.lookup(tid, args) do

     

       49
       +
             [{^args, value}] ->

     

       50
       +
               value

     

       51
       +
       

     

       52
       +
             [] ->

     

       53
       +
               value = func.()

     

       54
       +
               :ets.insert(tid, {args, value})

     

       55
       +
               value

     

       56
       +
           end

     

       57
       +
         end

     

       58
       +
       

     

       59
       +
         def process(stacks) do

     

       60
       +
           tid = :ets.new(:memoize, [:public, :set])

     

       61
       +
           depth = length(stacks[:a])

     

       62
       +
       

     

       63
       +
           try do

     

       64
       +
             do_process(stacks, %{}, target(depth), depth, tid)

     

       65
       +
           after

     

       66
       +
             :ets.delete(tid)

     

       67
       +
           end

     

       68
       +
         end

     

       69
       +
       

     

       70
       +
         defp do_process(target, _, target, _depth, _tid), do: 0

     

       71
       +
       

     

       72
       +
         defp do_process(stacks, hall, target, depth, tid) do

     

       73
       +
           memoize(tid, [stacks, hall], fn ->

     

       74
       +
             possible_moves(stacks, hall, depth)

     

       75
       +
             |> Enum.map(fn {new_stack, new_hall, cost} ->

     

       76
       +
               cost + do_process(new_stack, new_hall, target, depth, tid)

     

       77
       +
             end)

     

       78
       +
             |> Enum.min(&<=/2, fn -> :inf end)

     

       79
       +
           end)

     

       80
       +
         end

     

       81
       +
       

     

       82
       +
         defp possible_moves(stacks, hall, depth) do

     

       83
       +
           hall_to_room(stacks, hall, depth) ++ room_to_hall(stacks, hall, depth)

     

       84
       +
         end

     

       85
       +
       

     

       86
       +
         defp hall_to_room(stacks, hall, depth) do

     

       87
       +
           # IO.inspect({stacks, hall, depth}, label: elem(__ENV__.function, 0))

     

       88
       +
           for {pos, t} <- hall,

     

       89
       +
               clear_path_to_room?(t, pos, hall),

     

       90
       +
               accepts?(t, stacks),

     

       91
       +
               {size, new_stacks} = into_room(t, stacks),

     

       92
       +
               do: {new_stacks, Map.delete(hall, pos), cost(t, pos, @rooms[t], depth - size)}

     

       93
       +
         end

     

       94
       +
       

     

       95
       +
         defp room_to_hall(stacks, hall, depth) do

     

       96
       +
           []

     

       97
       +
         end

     

       98
       +
       

     

       99
       +
         defp clear_path_to_room?(t, pos, hall) do

     

       100
       +
           hall

     

       101
       +
           |> Map.keys()

     

       102
       +
           |> Enum.find(&(&1 in min(pos, @rooms[t])..max(pos, @rooms[t])))

     

       103
       +
           |> case do

     

       104
       +
             nil -> true

     

       105
       +
             _ -> false

     

       106
       +
           end

     

       107
       +
         end

     

       108
       +
       

     

       109
       +
         defp accepts?(t, stacks), do: Enum.all?(stacks[t], &(&1 == t))

     

       110
       +
       

     

       111
       +
         defp into_room(t, stacks) do

     

       112
       +
           Map.get_and_update!(stacks, t, &{length(&1), [t | &1]})

     

       113
       +
         end

     

       114
       +
       

     

       115
       +
         defp target(depth) do

     

       116
       +
           for v <- ~w[a b c d]a,

     

       117
       +
               into: %{},

     

       118
       +
               do: {v, List.duplicate(v, depth)}

     

       119
       +
         end

     

       120
       +
       

     

       121
       +
         def cost(elem, from, to, depth) do

     

       122
       +
           @costs[elem] * (depth + abs(to - from))

     

       123
       +
         end

     

       124
       +
       end

     

       125
       +
       ```

     

       126
       +
       

     

       127
       +
       ```output

     

       128
       +
       warning: variable "depth" is unused (if the variable is not meant to be used, prefix it with an underscore)

     

       129
       +
         day23.livemd#cell:58: Day23.room_to_hall/3

     

       130
       +
       

     

       131
       +
       warning: variable "hall" is unused (if the variable is not meant to be used, prefix it with an underscore)

     

       132
       +
         day23.livemd#cell:58: Day23.room_to_hall/3

     

       133
       +
       

     

       134
       +
       warning: variable "stacks" is unused (if the variable is not meant to be used, prefix it with an underscore)

     

       135
       +
         day23.livemd#cell:58: Day23.room_to_hall/3

     

       136
       +
       

     

       137
       +
       ```

     

       138
       +
       

     

       139
       +
       ```output

     

       140
       +
       {:module, Day23, <<70, 79, 82, 49, 0, 0, 23, ...>>, {:cost, 4}}

     

       141
       +
       ```

     

       142
       +
       

     

       143
       +
       ```elixir

     

       144
       +
       Day23.process(input)

     

       145
       +
       ```

     

       146
       +
       

     

       147
       +
       ```output

     

       148
       +
       :inf

     

       149
       +
       ```

2021/day23.txt

···

       1
       +
       #############

     

       2
       +
       #...........#

     

       3
       +
       ###D#D#C#C###

     

       4
       +
         #B#A#B#A#

     

       5
       +
         #########

+351

2021/day24.livemd

···

       1
       +
       <!-- livebook:{"persist_outputs":true} -->

     

       2
       +
       

     

       3
       +
       # Day 24

     

       4
       +
       

     

       5
       +
       ## Section

     

       6
       +
       

     

       7
       +
       ```elixir

     

       8
       +
       defmodule Day24 do

     

       9
       +
         def parse("inp " <> reg), do: {:inp, String.to_atom(reg)}

     

       10
       +
       

     

       11
       +
         def parse(<<op::binary-size(3)>> <> " " <> <<reg>> <> " " <> arg) do

     

       12
       +
           {String.to_atom(op), String.to_atom(<<reg>>), parse_arg(arg)}

     

       13
       +
         end

     

       14
       +
       

     

       15
       +
         defp parse_arg(arg) do

     

       16
       +
           case Integer.parse(arg) do

     

       17
       +
             {num, ""} -> num

     

       18
       +
             :error -> String.to_atom(arg)

     

       19
       +
           end

     

       20
       +
         end

     

       21
       +
       

     

       22
       +
         def evaluate(ops, input), do: evaluate(ops, Integer.digits(input), %{w: 0, x: 0, y: 0, z: 0})

     

       23
       +
       

     

       24
       +
         defp evaluate([], _, regs), do: regs

     

       25
       +
       

     

       26
       +
         defp evaluate([:nop | rest], input, regs), do: evaluate(rest, input, regs)

     

       27
       +
       

     

       28
       +
         defp evaluate([{:inp, reg} | rest], [v | input], regs),

     

       29
       +
           do: evaluate(rest, input, %{regs | reg => v})

     

       30
       +
       

     

       31
       +
         defp evaluate([{:eql, reg, v} | rest], input, regs) do

     

       32
       +
           val = if get(reg, regs) == get(v, regs), do: 1, else: 0

     

       33
       +
       

     

       34
       +
           evaluate(rest, input, %{regs | reg => val})

     

       35
       +
         end

     

       36
       +
       

     

       37
       +
         defp evaluate([{:add, reg, v} | rest], input, regs),

     

       38
       +
           do: evaluate(rest, input, %{regs | reg => get(reg, regs) + get(v, regs)})

     

       39
       +
       

     

       40
       +
         defp evaluate([{:mul, reg, v} | rest], input, regs),

     

       41
       +
           do: evaluate(rest, input, %{regs | reg => get(reg, regs) * get(v, regs)})

     

       42
       +
       

     

       43
       +
         defp evaluate([{:div, reg, v} | rest], input, regs),

     

       44
       +
           do: evaluate(rest, input, %{regs | reg => div(get(reg, regs), get(v, regs))})

     

       45
       +
       

     

       46
       +
         defp evaluate([{:mod, reg, v} | rest], input, regs),

     

       47
       +
           do: evaluate(rest, input, %{regs | reg => rem(get(reg, regs), get(v, regs))})

     

       48
       +
       

     

       49
       +
         defp get(imm, _regs) when is_integer(imm), do: imm

     

       50
       +
         defp get(reg, regs) when is_atom(reg), do: Map.get(regs, reg, 0)

     

       51
       +
       end

     

       52
       +
       

     

       53
       +
       input =

     

       54
       +
         File.stream!("day24.txt")

     

       55
       +
         |> Stream.map(&String.trim/1)

     

       56
       +
         |> Enum.map(&Day24.parse/1)

     

       57
       +
         |> IO.inspect(limit: :infinity)

     

       58
       +
       

     

       59
       +
       length(input)

     

       60
       +
       ```

     

       61
       +
       

     

       62
       +
       <!-- livebook:{"output":true} -->

     

       63
       +
       

     

       64
       +
       ```

     

       65
       +
       [

     

       66
       +
         {:inp, :w},

     

       67
       +
         {:mul, :x, 0},

     

       68
       +
         {:add, :x, :z},

     

       69
       +
         {:mod, :x, 26},

     

       70
       +
         {:div, :z, 1},

     

       71
       +
         {:add, :x, 11},

     

       72
       +
         {:eql, :x, :w},

     

       73
       +
         {:eql, :x, 0},

     

       74
       +
         {:mul, :y, 0},

     

       75
       +
         {:add, :y, 25},

     

       76
       +
         {:mul, :y, :x},

     

       77
       +
         {:add, :y, 1},

     

       78
       +
         {:mul, :z, :y},

     

       79
       +
         {:mul, :y, 0},

     

       80
       +
         {:add, :y, :w},

     

       81
       +
         {:add, :y, 16},

     

       82
       +
         {:mul, :y, :x},

     

       83
       +
         {:add, :z, :y},

     

       84
       +
         {:inp, :w},

     

       85
       +
         {:mul, :x, 0},

     

       86
       +
         {:add, :x, :z},

     

       87
       +
         {:mod, :x, 26},

     

       88
       +
         {:div, :z, 1},

     

       89
       +
         {:add, :x, 12},

     

       90
       +
         {:eql, :x, :w},

     

       91
       +
         {:eql, :x, 0},

     

       92
       +
         {:mul, :y, 0},

     

       93
       +
         {:add, :y, 25},

     

       94
       +
         {:mul, :y, :x},

     

       95
       +
         {:add, :y, 1},

     

       96
       +
         {:mul, :z, :y},

     

       97
       +
         {:mul, :y, 0},

     

       98
       +
         {:add, :y, :w},

     

       99
       +
         {:add, :y, 11},

     

       100
       +
         {:mul, :y, :x},

     

       101
       +
         {:add, :z, :y},

     

       102
       +
         {:inp, :w},

     

       103
       +
         {:mul, :x, 0},

     

       104
       +
         {:add, :x, :z},

     

       105
       +
         {:mod, :x, 26},

     

       106
       +
         {:div, :z, 1},

     

       107
       +
         {:add, :x, 13},

     

       108
       +
         {:eql, :x, :w},

     

       109
       +
         {:eql, :x, 0},

     

       110
       +
         {:mul, :y, 0},

     

       111
       +
         {:add, :y, 25},

     

       112
       +
         {:mul, :y, :x},

     

       113
       +
         {:add, :y, 1},

     

       114
       +
         {:mul, :z, :y},

     

       115
       +
         {:mul, :y, 0},

     

       116
       +
         {:add, :y, :w},

     

       117
       +
         {:add, :y, 12},

     

       118
       +
         {:mul, :y, :x},

     

       119
       +
         {:add, :z, :y},

     

       120
       +
         {:inp, :w},

     

       121
       +
         {:mul, :x, 0},

     

       122
       +
         {:add, :x, :z},

     

       123
       +
         {:mod, :x, 26},

     

       124
       +
         {:div, :z, 26},

     

       125
       +
         {:add, :x, -5},

     

       126
       +
         {:eql, :x, :w},

     

       127
       +
         {:eql, :x, 0},

     

       128
       +
         {:mul, :y, 0},

     

       129
       +
         {:add, :y, 25},

     

       130
       +
         {:mul, :y, :x},

     

       131
       +
         {:add, :y, 1},

     

       132
       +
         {:mul, :z, :y},

     

       133
       +
         {:mul, :y, 0},

     

       134
       +
         {:add, :y, :w},

     

       135
       +
         {:add, :y, 12},

     

       136
       +
         {:mul, :y, :x},

     

       137
       +
         {:add, :z, :y},

     

       138
       +
         {:inp, :w},

     

       139
       +
         {:mul, :x, 0},

     

       140
       +
         {:add, :x, :z},

     

       141
       +
         {:mod, :x, 26},

     

       142
       +
         {:div, :z, 26},

     

       143
       +
         {:add, :x, -3},

     

       144
       +
         {:eql, :x, :w},

     

       145
       +
         {:eql, :x, 0},

     

       146
       +
         {:mul, :y, 0},

     

       147
       +
         {:add, :y, 25},

     

       148
       +
         {:mul, :y, :x},

     

       149
       +
         {:add, :y, 1},

     

       150
       +
         {:mul, :z, :y},

     

       151
       +
         {:mul, :y, 0},

     

       152
       +
         {:add, :y, :w},

     

       153
       +
         {:add, :y, 12},

     

       154
       +
         {:mul, :y, :x},

     

       155
       +
         {:add, :z, :y},

     

       156
       +
         {:inp, :w},

     

       157
       +
         {:mul, :x, 0},

     

       158
       +
         {:add, :x, :z},

     

       159
       +
         {:mod, :x, 26},

     

       160
       +
         {:div, :z, 1},

     

       161
       +
         {:add, :x, 14},

     

       162
       +
         {:eql, :x, :w},

     

       163
       +
         {:eql, :x, 0},

     

       164
       +
         {:mul, :y, 0},

     

       165
       +
         {:add, :y, 25},

     

       166
       +
         {:mul, :y, :x},

     

       167
       +
         {:add, :y, 1},

     

       168
       +
         {:mul, :z, :y},

     

       169
       +
         {:mul, :y, 0},

     

       170
       +
         {:add, :y, :w},

     

       171
       +
         {:add, :y, 2},

     

       172
       +
         {:mul, :y, :x},

     

       173
       +
         {:add, :z, :y},

     

       174
       +
         {:inp, :w},

     

       175
       +
         {:mul, :x, 0},

     

       176
       +
         {:add, :x, :z},

     

       177
       +
         {:mod, :x, 26},

     

       178
       +
         {:div, :z, 1},

     

       179
       +
         {:add, :x, 15},

     

       180
       +
         {:eql, :x, :w},

     

       181
       +
         {:eql, :x, 0},

     

       182
       +
         {:mul, :y, 0},

     

       183
       +
         {:add, :y, 25},

     

       184
       +
         {:mul, :y, :x},

     

       185
       +
         {:add, :y, 1},

     

       186
       +
         {:mul, :z, :y},

     

       187
       +
         {:mul, :y, 0},

     

       188
       +
         {:add, :y, :w},

     

       189
       +
         {:add, :y, 11},

     

       190
       +
         {:mul, :y, :x},

     

       191
       +
         {:add, :z, :y},

     

       192
       +
         {:inp, :w},

     

       193
       +
         {:mul, :x, 0},

     

       194
       +
         {:add, :x, :z},

     

       195
       +
         {:mod, :x, 26},

     

       196
       +
         {:div, :z, 26},

     

       197
       +
         {:add, :x, -16},

     

       198
       +
         {:eql, :x, :w},

     

       199
       +
         {:eql, :x, 0},

     

       200
       +
         {:mul, :y, 0},

     

       201
       +
         {:add, :y, 25},

     

       202
       +
         {:mul, :y, :x},

     

       203
       +
         {:add, :y, 1},

     

       204
       +
         {:mul, :z, :y},

     

       205
       +
         {:mul, :y, 0},

     

       206
       +
         {:add, :y, :w},

     

       207
       +
         {:add, :y, 4},

     

       208
       +
         {:mul, :y, :x},

     

       209
       +
         {:add, :z, :y},

     

       210
       +
         {:inp, :w},

     

       211
       +
         {:mul, :x, 0},

     

       212
       +
         {:add, :x, :z},

     

       213
       +
         {:mod, :x, 26},

     

       214
       +
         {:div, :z, 1},

     

       215
       +
         {:add, :x, 14},

     

       216
       +
         {:eql, :x, :w},

     

       217
       +
         {:eql, :x, 0},

     

       218
       +
         {:mul, :y, 0},

     

       219
       +
         {:add, :y, 25},

     

       220
       +
         {:mul, :y, :x},

     

       221
       +
         {:add, :y, 1},

     

       222
       +
         {:mul, :z, :y},

     

       223
       +
         {:mul, :y, 0},

     

       224
       +
         {:add, :y, :w},

     

       225
       +
         {:add, :y, 12},

     

       226
       +
         {:mul, :y, :x},

     

       227
       +
         {:add, :z, :y},

     

       228
       +
         {:inp, :w},

     

       229
       +
         {:mul, :x, 0},

     

       230
       +
         {:add, :x, :z},

     

       231
       +
         {:mod, :x, 26},

     

       232
       +
         {:div, :z, 1},

     

       233
       +
         {:add, :x, 15},

     

       234
       +
         {:eql, :x, :w},

     

       235
       +
         {:eql, :x, 0},

     

       236
       +
         {:mul, :y, 0},

     

       237
       +
         {:add, :y, 25},

     

       238
       +
         {:mul, :y, :x},

     

       239
       +
         {:add, :y, 1},

     

       240
       +
         {:mul, :z, :y},

     

       241
       +
         {:mul, :y, 0},

     

       242
       +
         {:add, :y, :w},

     

       243
       +
         {:add, :y, 9},

     

       244
       +
         {:mul, :y, :x},

     

       245
       +
         {:add, :z, :y},

     

       246
       +
         {:inp, :w},

     

       247
       +
         {:mul, :x, 0},

     

       248
       +
         {:add, :x, :z},

     

       249
       +
         {:mod, :x, 26},

     

       250
       +
         {:div, :z, 26},

     

       251
       +
         {:add, :x, -7},

     

       252
       +
         {:eql, :x, :w},

     

       253
       +
         {:eql, :x, 0},

     

       254
       +
         {:mul, :y, 0},

     

       255
       +
         {:add, :y, 25},

     

       256
       +
         {:mul, :y, :x},

     

       257
       +
         {:add, :y, 1},

     

       258
       +
         {:mul, :z, :y},

     

       259
       +
         {:mul, :y, 0},

     

       260
       +
         {:add, :y, :w},

     

       261
       +
         {:add, :y, 10},

     

       262
       +
         {:mul, :y, :x},

     

       263
       +
         {:add, :z, :y},

     

       264
       +
         {:inp, :w},

     

       265
       +
         {:mul, :x, 0},

     

       266
       +
         {:add, :x, :z},

     

       267
       +
         {:mod, :x, 26},

     

       268
       +
         {:div, :z, 26},

     

       269
       +
         {:add, :x, -11},

     

       270
       +
         {:eql, :x, :w},

     

       271
       +
         {:eql, :x, 0},

     

       272
       +
         {:mul, :y, 0},

     

       273
       +
         {:add, :y, 25},

     

       274
       +
         {:mul, :y, :x},

     

       275
       +
         {:add, :y, 1},

     

       276
       +
         {:mul, :z, :y},

     

       277
       +
         {:mul, :y, 0},

     

       278
       +
         {:add, :y, :w},

     

       279
       +
         {:add, :y, 11},

     

       280
       +
         {:mul, :y, :x},

     

       281
       +
         {:add, :z, :y},

     

       282
       +
         {:inp, :w},

     

       283
       +
         {:mul, :x, 0},

     

       284
       +
         {:add, :x, :z},

     

       285
       +
         {:mod, :x, 26},

     

       286
       +
         {:div, :z, 26},

     

       287
       +
         {:add, :x, -6},

     

       288
       +
         {:eql, :x, :w},

     

       289
       +
         {:eql, :x, 0},

     

       290
       +
         {:mul, :y, 0},

     

       291
       +
         {:add, :y, 25},

     

       292
       +
         {:mul, :y, :x},

     

       293
       +
         {:add, :y, 1},

     

       294
       +
         {:mul, :z, :y},

     

       295
       +
         {:mul, :y, 0},

     

       296
       +
         {:add, :y, :w},

     

       297
       +
         {:add, :y, 6},

     

       298
       +
         {:mul, :y, :x},

     

       299
       +
         {:add, :z, :y},

     

       300
       +
         {:inp, :w},

     

       301
       +
         {:mul, :x, 0},

     

       302
       +
         {:add, :x, :z},

     

       303
       +
         {:mod, :x, 26},

     

       304
       +
         {:div, :z, 26},

     

       305
       +
         {:add, :x, -11},

     

       306
       +
         {:eql, :x, :w},

     

       307
       +
         {:eql, :x, 0},

     

       308
       +
         {:mul, :y, 0},

     

       309
       +
         {:add, :y, 25},

     

       310
       +
         {:mul, :y, :x},

     

       311
       +
         {:add, :y, 1},

     

       312
       +
         {:mul, :z, :y},

     

       313
       +
         {:mul, :y, 0},

     

       314
       +
         {:add, :y, :w},

     

       315
       +
         {:add, :y, 15},

     

       316
       +
         {:mul, :y, :x},

     

       317
       +
         {:add, :z, :y}

     

       318
       +
       ]

     

       319
       +
       ```

     

       320
       +
       

     

       321
       +
       <!-- livebook:{"output":true} -->

     

       322
       +
       

     

       323
       +
       ```

     

       324
       +
       252

     

       325
       +
       ```

     

       326
       +
       

     

       327
       +
       ```elixir

     

       328
       +
       44..52 |> Enum.map(&rem(&1, 26))

     

       329
       +
       ```

     

       330
       +
       

     

       331
       +
       <!-- livebook:{"output":true} -->

     

       332
       +
       

     

       333
       +
       ```

     

       334
       +
       [18, 19, 20, 21, 22, 23, 24, 25, 0]

     

       335
       +
       ```

     

       336
       +
       

     

       337
       +
       ```elixir

     

       338
       +
       IO.inspect(Day24.evaluate(input, 11_111_111_111_161))

     

       339
       +
       ```

     

       340
       +
       

     

       341
       +
       <!-- livebook:{"output":true} -->

     

       342
       +
       

     

       343
       +
       ```

     

       344
       +
       %{w: 1, x: 1, y: 16, z: 207697766}

     

       345
       +
       ```

     

       346
       +
       

     

       347
       +
       <!-- livebook:{"output":true} -->

     

       348
       +
       

     

       349
       +
       ```

     

       350
       +
       %{w: 1, x: 1, y: 16, z: 207697766}

     

       351
       +
       ```

+252

2021/day24.txt

2021/day3.livemd 2021/day03.livemd

2021/day3.txt 2021/day03.txt

2021/day4.livemd 2021/day04.livemd

2021/day4.txt 2021/day04.txt

2021/day5.livemd 2021/day05.livemd

2021/day5.txt 2021/day05.txt

2021/day6.livemd 2021/day06.livemd

2021/day6.txt 2021/day06.txt

2021/day7.livemd 2021/day07.livemd

2021/day7.txt 2021/day07.txt

2021/day8.livemd 2021/day08.livemd

2021/day8.txt 2021/day08.txt

2021/day9.livemd 2021/day09.livemd

2021/day9.txt 2021/day09.txt