In the last contest 4th problem was a bit wired and participants should determine how many iterations are enough to solve the problem and not exceeding the time limit, in the hacking phase some solutions hacked which passed all the test cases for example i submitted the same code that was hacked after final standing released this code during the contest get hacked and after the contest was accepted.

-my submission that was hacked: https://codeforces.me/contest/2043/submission/298290829

-my submission that was accepted: https://codeforces.me/contest/2043/submission/298322049

so there are still many lucky participants that their solutions wasn’t correct but they didn’t fail in the test cases please do something about this AcidWrongGod, BledDest and Ferume.