You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
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require "advent"
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INPUT = input(2020, 6).split("\n\n")
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def part1
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INPUT.sum &.chars.uniq!.count(&.ascii_letter?)
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end
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def part2
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INPUT.sum &.lines.map(&.chars.to_set).intersect.size
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end
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puts part1
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puts part2
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