constant factor speedup (vector -> array) #280
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problem https://codeforces.com/contest/718/problem/C , problem is seg tree of matrixes, and it's well known having many small vectors is slow current Matrix code: https://codeforces.com/contest/718/submission/294132074 4702 ms |
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Huh, I was sure the compiler would be able to optimize this. Makes sense though. |
simonlindholm
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