Advent of code day 12

Mix.install([
  {:kino, "~> 0.5.0"}
])

Setup input

example = Kino.Input.textarea("Please paste your input example:")

input = Kino.Input.textarea("Please paste your real input:")

# probably it does not make any sense but ir gave me the star.
input =
  example
  |> Kino.Input.read()
  |> String.split(["\n\n"])

[amounts | patterns] = Enum.reverse(input)

patterns =
  Enum.map(patterns, fn g ->
    idx = String.at(g, 0)
    size = String.count(g, "#")

    {String.to_integer(idx), size}
  end)
  |> Enum.into(%{})

amounts
|> String.split("\n", trim: true)
|> Enum.reduce(0, fn line, acc ->
  [x, y | nums] = String.split(line, [": ", "x", " "]) |> Enum.map(&String.to_integer/1)

  total =
    Enum.with_index(nums)
    |> Enum.reduce(0, fn {v, i}, acc ->
      acc + patterns[i] * v
    end)

  if total <= x * y do
    acc + 1
  else
    acc
  end
end)