21 lines
622 B
Factor
21 lines
622 B
Factor
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! Copyright (C) 2021 Bubbler.
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! See http://factorcode.org/license.txt for BSD license.
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USING: arrays assocs io.encodings.utf8 io.files kernel math
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math.vectors prettyprint sequences sequences.extras sets ;
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IN: aoc2015.day3
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: path-coords ( str -- seq )
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>array ">^<v" zip-index substitute C{ 0 1 } swap n^v
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0 prefix 0 [ + ] accumulate* ;
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: day3-silver ( str -- n )
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path-coords cardinality ;
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: day3-gold ( str -- n )
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[ <evens> path-coords ] [ <odds> path-coords ] bi
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append cardinality ;
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: day3-main ( -- ) "datasets/aoc2015/day3.txt" utf8 file-contents
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[ day3-silver . ] [ day3-gold . ] bi ;
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MAIN: day3-main
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