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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seats = ARGF.read.split("\n")
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.map {|pass| pass.tr("FB", "01").tr("LR", "01") }
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.map {|pass| pass.to_i(2) }
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p seats.max # day 1
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p (0b1000..).find {|id| !seats.include?(id) }
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