Advent of Code 2015 Day 2 Part 1

Mix.install([
  {:kino_aoc, "~> 0.1"}
])

Get Inputs

{:ok, puzzle_input} =
  KinoAOC.download_puzzle("2015", "2", System.fetch_env!("LB_SESSION"))

My answer

puzzle_input
|> String.split("\n")
|> Enum.map(fn row ->
  [l, w, h] =
    row
    |> String.split("x")
    |> Enum.map(&String.to_integer(&1))

  {lw, wh, hl} = {l * w, w * h, h * l}

  slack = Enum.min([lw, wh, hl])

  2 * lw + 2 * wh + 2 * hl + slack
end)
|> Enum.sum()