c++ code run-time speed issue
Difference between en1 and en2, changed 0 character(s)
I was practicing an old problem [757G](https://codeforces.net/contest/757/problem/G) and I met a huge speed difference among different c++ standard.  ↵
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I [received TLE](https://codeforces.net/contest/757/submission/208910787) (> 5000ms) when submitting with c++17 (64, win). But the exact same code do run fast (< 800ms) in the corresponding testcase when submitting with [c++17] (https://codeforces.net/contest/757/submission/208910712) or [c++20 (64, win)] (https://codeforces.net/contest/757/submission/208910479).  ↵
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I'm wondering why this could happen. I will be graceful if kindly everybody could point out the reason. 

History

 
 
 
 
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  Rev. Lang. By When Δ Comment
en2 English BeyondHeaven 2023-06-07 18:44:40 0 (published)
en1 English BeyondHeaven 2023-06-07 18:43:52 658 Initial revision (saved to drafts)