In the codeforces round 709, I made a submission from my alt account for div2A to see if the codeforces plagiarism checker really works. To be honest, I thought initially that the round was unrated because of no formal announcement, so I dared to try it out. Eventually, ended up losing rating ,lol. Well, it doesn't matter.
Here are the two submissions:110629586 and 110636692 with exact 100% match. But, the plagiarism wasn't detected. So, I wondered if several such submissions go unnoticed every contest to due to this bug or am I missing something. Feel free to comment, I don't care about the downvotes as well but if this is a serious issue, MikeMirzayanov please look into it.