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Strange differences in execution time of C++17 and C++20 on Codeforces
Today I managed to solve 2020E - Матожидание квадрата and got passed barely within the time limit using C++17. Here is the submission 284264092, and as you see that it runs for 3900+ ms, while the TL is 4000 ms.
However when I selected C++20 and submitted, I found that the execution time was < 1000 ms. 284263872
So can anyone tell me what causes the difference?
