16 lines
540 B
Factor
16 lines
540 B
Factor
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! Copyright (C) 2020 Bubbler.
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! See http://factorcode.org/license.txt for BSD license.
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USING: io io.encodings.utf8 io.files kernel math.combinatorics
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math.parser prettyprint sequences splitting ;
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IN: aoc2020.day1
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: day1-silver ( seq -- prod )
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2 all-combinations [ sum 2020 = ] find nip product ;
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: day1-gold ( seq -- prod )
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3 all-combinations [ sum 2020 = ] find nip product ;
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: day1-main ( -- ) "datasets/aoc2020/day1.txt" utf8 file-contents "\n" split [ string>number ] map
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[ day1-silver . ] [ day1-gold . ] bi ;
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MAIN: day1-main
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