Day 1

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

input = Kino.Input.textarea("Paste input here:")

Part 1

input
|> Kino.Input.read()
|> String.split("\n\n", trim: true)
|> Enum.map(fn elf_calories ->
  elf_calories
  |> String.split("\n")
  |> Enum.map(&String.to_integer/1)
  |> Enum.sum()
end)
|> Enum.max()

Part 2

input
|> Kino.Input.read()
|> String.split("\n\n", trim: true)
|> Enum.map(fn elf_calories ->
  elf_calories
  |> String.split("\n")
  |> Enum.map(&String.to_integer/1)
  |> Enum.sum()
end)
|> Enum.sort(:desc)
|> Enum.slice(0..2)
|> Enum.sum()