On the recent round CodeTON Round 7 , I solved ABCDE, and have passed all systest. However, I then got a message from the system that my submissions have been skipped. these two submissions (https://codeforces.me/contest/1896/submission/234295098) and (https://codeforces.me/contest/1896/submission/234306375) are a bit similar but we did not cheat, so I'm gonna mention MikeMirzayanov here to check our submissions.