15 lines
345 B
Racket
15 lines
345 B
Racket
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#lang racket
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;; solution for day 1
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(module+ main
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(define nums (map string->number (file->lines "inputs/1")))
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;; part 1
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(for*/first ([a (in-list nums)] [b (in-list nums)] #:when (= 2020 (+ a b)))
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(* a b))
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;; part 2
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(for*/first ([a (in-list nums)] [b (in-list nums)] [c (in-list nums)] #:when (= 2020 (+ a b c)))
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(* a b c)))
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