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|
stream = File.stream!("inputs/day2.txt", :line, [:read])
materials =
for line <- stream, into: [] do
sides =
String.trim(line)
|> String.split("x", trim: true)
|> Enum.map(&String.to_integer(&1))
|> Enum.sort()
[w, l, h] = sides
%{wrapping: w * l * 3 + w * h * 2 + l * h * 2, ribbon: 2 * (w + l) + w * l * h}
end
totalWrapping =
materials
|> Enum.map(& &1.wrapping)
|> Enum.sum()
totalRibbon =
materials
|> Enum.map(& &1.ribbon)
|> Enum.sum()
IO.puts("Wrapping used: #{totalWrapping}")
IO.puts("Ribbon used: #{totalRibbon}")
|
