thanks tali 2
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6.rkt
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6.rkt
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@ -7,7 +7,7 @@
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(define (do-race time dist)
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(match-define (list lower upper)
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(quadratic-solutions 1 (- time) dist))
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(inexact->exact (- (ceiling upper) (add1 (floor lower)))))
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(inexact->exact (- (ceiling upper) (floor lower) 1)))
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(define (part1 input)
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(for/product ([time (in-list (first input))]
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