9 lines
382 B
Elixir
9 lines
382 B
Elixir
list = File.read!("input.txt")
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|> String.split("\n")
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|> Enum.map(&String.to_integer/1)
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# pattern match binary tuple from list values
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[{a, b} | _] = for x <- list, y <- list, x + y == 2020, do: {x, y}
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IO.puts("Part 1: #{a * b}")
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# same thing but with 3-ary tuple
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[{a, b, c} | _] = for x <- list, y <- list, z <- list, x + y + z == 2020, do: {x, y, z}
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IO.puts("Part 2: #{a * b * c}")
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