Hi! Well I'm again facing this problem with resubmissions! As I said here, cf's mirrors may not recognize double submissions of a same code. Today, cf was checking my connection security every single time I wanted to load a page during the contest. When I wanted to submit for problme C, the checking process was taking to much time, so I stoped it, checked my submissions in m3.codeforces... there wasn't anything, then I submitted the same code and after a while I saw another submission for C. Codes are again exactly the same, no extra space or newline ... MikeMirzayanov please check it, please fix this issue, and please remove my second submission.