commit 45c981ce699236e535e46eb12401ced32b06487e · hauleth.dev/advent-of-code

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2022/day10.livemd

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

     

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       # Day 10

     

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       ```elixir

     

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       Mix.install([

     

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         {:kino_aoc, git: "https://github.com/ljgago/kino_aoc"}

     

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       ])

     

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       ```

     

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

     

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       ```

     

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       :ok

     

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       ```

     

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       ## Section

     

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       <!-- livebook:{"attrs":{"day":"10","session_secret":"ADVENT_OF_CODE_SESSION","variable":"puzzle_input","year":"2022"},"kind":"Elixir.KinoAOC.HelperCell","livebook_object":"smart_cell"} -->

     

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       ```elixir

     

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       {:ok, puzzle_input} =

     

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         KinoAOC.download_puzzle("2022", "10", System.fetch_env!("LB_ADVENT_OF_CODE_SESSION"))

     

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       ```

     

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

     

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       ```

     

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       {:ok,

     

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        "noop\naddx 7\naddx -1\naddx -1\naddx 5\nnoop\nnoop\naddx 1\naddx 3\naddx 2\nnoop\naddx 2\naddx 5\naddx 2\naddx 10\naddx -9\naddx 4\nnoop\nnoop\nnoop\naddx 3\naddx 5\naddx -40\naddx 26\naddx -23\naddx 2\naddx 5\naddx 26\naddx -35\naddx 12\naddx 2\naddx 17\naddx -10\naddx 3\nnoop\naddx 2\naddx 3\nnoop\naddx 2\naddx 3\nnoop\naddx 2\naddx 2\naddx -39\nnoop\naddx 15\naddx -12\naddx 2\naddx 10\nnoop\naddx -1\naddx -2\nnoop\naddx 5\nnoop\naddx 5\nnoop\nnoop\naddx 1\naddx 4\naddx -25\naddx 26\naddx 2\naddx 5\naddx 2\nnoop\naddx -3\naddx -32\naddx 1\naddx 4\naddx -2\naddx 3\nnoop\nnoop\naddx 3\nnoop\naddx 6\naddx -17\naddx 27\naddx -7\naddx 5\naddx 2\naddx 3\naddx -2\naddx 4\nnoop\nnoop\naddx 5\naddx 2\naddx -39\nnoop\nnoop\naddx 2\naddx 5\naddx 3\naddx -2\naddx 2\naddx 11\naddx -4\naddx -5\nnoop\naddx 10\naddx -18\naddx 19\naddx 2\naddx 5\naddx 2\naddx 2\naddx 3\naddx -2\naddx 2\naddx -37\nnoop\naddx 5\naddx 4\naddx -1\nnoop\naddx 4\nnoop\nnoop\naddx 1\naddx 4\nnoop\naddx 1\naddx 2\nnoop\naddx 3\naddx 5\nnoop\naddx -3\naddx 5\naddx 5\naddx 2\naddx 3\nnoop\naddx -32\nnoop\n"}

     

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       ```

     

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       ```elixir

     

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       bytecode =

     

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         puzzle_input

     

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         |> String.split("\n", trim: true)

     

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         |> Enum.map(fn

     

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           "noop" -> %{cycles: 1, inc: 0}

     

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           "addx " <> num -> %{cycles: 2, inc: String.to_integer(num)}

     

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         end)

     

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       ```

     

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

     

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       ```

     

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       [

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 2, inc: 7},

     

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         %{cycles: 2, inc: -1},

     

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         %{cycles: 2, inc: -1},

     

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         %{cycles: 2, inc: 5},

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 2, inc: 1},

     

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         %{cycles: 2, inc: 3},

     

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         %{cycles: 2, inc: 2},

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 2, inc: 2},

     

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         %{cycles: 2, inc: 5},

     

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         %{cycles: 2, inc: 2},

     

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         %{cycles: 2, inc: 10},

     

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         %{cycles: 2, inc: -9},

     

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         %{cycles: 2, inc: 4},

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 2, inc: 3},

     

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         %{cycles: 2, inc: 5},

     

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         %{cycles: 2, inc: -40},

     

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         %{cycles: 2, inc: 26},

     

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         %{cycles: 2, inc: -23},

     

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         %{cycles: 2, inc: 2},

     

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         %{cycles: 2, inc: 5},

     

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         %{cycles: 2, inc: 26},

     

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         %{cycles: 2, inc: -35},

     

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         %{cycles: 2, inc: 12},

     

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         %{cycles: 2, inc: 2},

     

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         %{cycles: 2, inc: 17},

     

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         %{cycles: 2, inc: -10},

     

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         %{cycles: 2, inc: 3},

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 2, inc: 2},

     

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         %{cycles: 2, inc: 3},

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 2, inc: 2},

     

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         %{cycles: 2, inc: 3},

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 2, inc: 2},

     

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         %{cycles: 2, inc: 2},

     

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         %{cycles: 2, inc: -39},

     

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         %{cycles: 1, inc: 0},

     

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         %{cycles: 2, inc: 15},

     

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         %{cycles: 2, inc: -12},

     

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         %{cycles: 2, inc: 2},

     

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         %{cycles: 2, ...},

     

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         %{...},

     

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         ...

     

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       ]

     

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       ```

     

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       ```elixir

     

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       defmodule CRT do

     

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         def eval(bc, acc, func) do

     

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           Enum.reduce(

     

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             bc,

     

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             {{1, 0}, acc},

     

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             fn

     

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               inst, {{signal, cycles}, acc} ->

     

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                 cycles = cycles + inst.cycles

     

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                 {{signal + inst.inc, cycles}, func.({cycles, signal}, acc)}

     

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             end

     

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           )

     

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         end

     

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       end

     

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       ```

     

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

     

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       ```

     

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       {:module, CRT, <<70, 79, 82, 49, 0, 0, 9, ...>>, {:eval, 3}}

     

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       ```

     

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       ## Task 1

     

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       ```elixir

     

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       {_, {_, sum}} =

     

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         CRT.eval(

     

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           bytecode,

     

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           {Enum.to_list(20..220//40), 0},

     

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           fn

     

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             {cycles, x}, {[bp | bps], sum} ->

     

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               if bp >= cycles do

     

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                 {bps, sum + x * bp}

     

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               else

     

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                 {[bp | bps], sum}

     

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               end

     

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             _, acc ->

     

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               acc

     

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           end

     

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         )

     

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       sum

     

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       ```

     

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

     

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       ```

     

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       5360

     

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       ```

     

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       ## Task 2

     

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       ```elixir

     

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       {_, {_, screen}} =

     

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         CRT.eval(

     

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           bytecode,

     

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           {0, []},

     

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           fn {cycle, x}, {p, screen} ->

     

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             range = (x - 1)..(x + 1)

     

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             screen =

     

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               p..(cycle - 1)

     

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               |> Enum.reduce(screen, fn px, acc ->

     

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                 line = div(px, 40) * 40

     

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                 [(px - line) in range | acc]

     

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               end)

     

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             {cycle, screen}

     

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           end

     

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         )

     

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       screen

     

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       |> Enum.reduce([], fn

     

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         false, acc -> [?\s | acc]

     

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         true, acc -> [?█ | acc]

     

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       end)

     

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       |> Enum.chunk_every(40)

     

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       |> Enum.join("\n")

     

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       |> IO.puts()

     

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       ```

     

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

     

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       ```

     

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       ███   ██  ████ ████ █  █ █  █ ███  █  █ 

     

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       █  █ █  █    █ █    █  █ █  █ █  █ █ █  

     

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       █  █ █      █  ███  ████ █  █ █  █ ██   

     

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       ███  █ ██  █   █    █  █ █  █ ███  █ █  

     

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       █ █  █  █ █    █    █  █ █  █ █ █  █ █  

     

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       █  █  ███ ████ ████ █  █  ██  █  █ █  █ 

     

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       ```

     

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

     

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       ```

     

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       :ok

     

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       ```