TL;DR: Some 1028ms submission got AC in a 1-second-TL problem.
http://codeforces.com/contest/351/problem/A
http://codeforces.com/contest/351/status/A?order=BY_CONSUMED_TIME_DESC
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On the problem statement page it states that runtimes are multiplied by a factor of 2. Perhaps that submission was submitted prior the server upgrades, and was initially a 514 ms submission that was then multiplied by 2 to be congruent with present day submissions.
I don't think so, I resubmitted this code 28281801 and it took 998ms. So it would be hard to believe it was initially 514ms submission.
Your submission works 499 ms on server, so I believe that submission works 514ms on server.
so you are saying the server now is only this little faster? then what's the idea of 2x multiplier. might as well have 1.5x or 1.2x. I am pretty sure the server now are more than 1.1x faster than 3 years ago
I think multiplier on this problem because of C++14. I tried to submit this code on same compiler and got tle57 28288708 but on c++14 it works only 530 ms 28288694.
right, it was my mistake for using the wrong compiler. Sorry about that. But seems to me it make sense to submit in C++14 all the time as it is more likely to be faster?
Yes, but in current contests it's not so big difference between c++11 and c++14.
Maybe the judge decided to perform some rounding...