20 lines
463 B
Elixir
20 lines
463 B
Elixir
defmodule Day4Part1 do
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@required MapSet.new(["byr", "ecl", "eyr", "hcl", "hgt", "iyr", "pid"])
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def run do
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File.read!("input")
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|> String.trim()
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|> String.split("\n\n")
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|> Enum.map(fn passport ->
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passport
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|> String.split([" ", "\n"])
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|> Enum.map(&String.split(&1, ":"))
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|> Enum.into(MapSet.new(), fn [k, _] -> k end)
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end)
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|> Enum.count(&MapSet.subset?(@required, &1))
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|> IO.puts()
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end
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end
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Day4Part1.run()
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