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Day 2: 240

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Christoph Stahl 2021-12-02 14:52:04 +01:00
parent 536dd4f89e
commit 8984d1060c
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d2golf.hs Normal file
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q[h,f](d,n)|"u"<-d=[h-n,f]|"d"<-d=[h+n,f]|let=[h,f+n]
p[h,f,a](d,n)|"u"<-d=[h,f,a-n]|"d"<-d=[h,f,a+n]|let=[h+n,f+n*a,a]
main=interact$show.(\a->product.($a)<$>[init.foldl p[0,0,0],foldl q[0,0]]).map(fmap read.splitAt 1.map head.words).lines