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