my submission on problem C of Codeforces Round #909 (Div. 3) initially got AC during contest time after hacking phase it got TLE on system testing after system testing ended i submitted the exact same code but got AC it is first time i am seeing something like this???is it any kind of bug or what?

what would happen to my contest result?

see the code if i made any changes!!!

TLE (System Testing) : 233167945

AC (Exact Same Code) : 233277883