aoc2020day1.ex

defmodule Day1 do
  def read_input do
    File.read!("input/day1.txt")
    |> String.split("\n", trim: true)
    |> Enum.map(&String.to_integer/1)
  end

  def part1 do
    values = read_input()
    for a <- values, b <- values, a + b == 2020, do: a * b
    |> IO.inspect
  end

  def part2 do
    values = read_input()
    for a <- values, b <- values, c <- values, a + b + c == 2020, do: a * b * c
    |> IO.inspect
  end
end