[look here](https://mirror.codeforces.com/contest/1591/submission/138907597)↵
↵
And I submit this code five times after the contest(same code, just add some comments, [1](https://mirror.codeforces.com/contest/1591/submission/138941843), [2](https://mirror.codeforces.com/contest/1591/submission/138941850), [3](https://mirror.codeforces.com/contest/1591/submission/138941856), [4](https://mirror.codeforces.com/contest/1591/submission/138941864), [5](https://mirror.codeforces.com/contest/1591/submission/138941871)), none of them get TLE. ↵
↵
I think it's because the volatility. ↵
↵
I hope anyone can rejudge it.↵
↵
Edit : It's rejudged. Thanks!↵
↵
↵
And I submit this code five times after the contest(same code, just add some comments, [1](https://mirror.codeforces.com/contest/1591/submission/138941843), [2](https://mirror.codeforces.com/contest/1591/submission/138941850), [3](https://mirror.codeforces.com/contest/1591/submission/138941856), [4](https://mirror.codeforces.com/contest/1591/submission/138941864), [5](https://mirror.codeforces.com/contest/1591/submission/138941871)), none of them get TLE. ↵
↵
I think it's because the volatility. ↵
↵
I hope anyone can rejudge it.↵
↵
Edit : It's rejudged. Thanks!↵
↵