AOC Day 1

Section

input =
  File.read!("01/input.txt")
  |> String.split("\n")

Enum.reduce(input, {0, 0}, fn line, {max, cur} ->
  if line == "" do
    if cur > max do
      {cur, 0}
    else
      {max, 0}
    end
  else
    {max, cur + String.to_integer(line)}
  end
end)

Enum.reduce(input, {[], 0}, fn line, {top3, cur} ->
  if line == "" do
    {
      [cur | top3]
      |> Enum.sort()
      |> Enum.reverse()
      |> Enum.take(3),
      0
    }
  else
    {top3, cur + String.to_integer(line)}
  end
end)
|> elem(0)
|> Enum.sum()