I am facing a really weird fast execution time on Codeforces on submission [submission:75468775]. On test #6, the code runs for `1153` ms on Codeforces servers, but when I run it on my own computer, it takes me `5682` ms to run! Yes there is difference on hardware of course, but it runs about 5 times faster on Codeforces! I am wondering if there is any optimization on Codeforces servers or compile instructions which makes it run as fast as this?↵
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*UPD*: That is actually because of `-O2` compile flag. Never knew it affects the running time as much as making it run 5 times faster.
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*UPD*: That is actually because of `-O2` compile flag. Never knew it affects the running time as much as making it run 5 times faster.
