A Small Question about the Execution Time of languages C++17 and C++20

Revision en1, by wsc2008qwq, 2023-02-06 06:00:04

In the last round #850, when solving problem D of div.1 1785D - Wooden Spoon, I submitted the code with language C++17, using fast fourier transformation (although it's not the intended solution, but its time complexity is correct), but it gave TLE on pretest 20 (which is $$$n=20$$$).

After the contest, I resubmitted the same code with language C++20, and it shown Accepted with the execution time of only 1434ms! So I wonder why there's such a big difference between these two languages, and I want to know whether I can request a rejudge in such kind of situations.

Here's the submission link: C++17 192349326 C++20 192414277

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en1 English wsc2008qwq 2023-02-06 06:00:04 722 Initial revision (published)