When I was submitting my code just now, I noticed that every submission spends several minutes in the queue. Then I opened the status page and realized that many of the recently submitted codes come from accounts that are not rated.
It really looks like these accounts are bots. A huge number of them started being active today. None of them have names or countries set, and their handles are random and very similar to each other.
Please do something about this bot problem. It slows down the judging queue and affects everyone.
And all those bots solved like 50+ questions just today
Yes, exactly.
and most of them registered 2 days ago
I've noticed the same thing you mentioned.
Some accounts like d5ofacfp94, 0dn5y5ke49, osn5y06pl4, are just created 2 days ago, and have their first submission on about 11 o'clock (UTC+8) this night and then submit at about a crazy speed (nearly 3 times a minute) in the next 10 minutes.
Their username seems meaningless, and their code style is similar. It seems something like an AI model is testing.
I haven't notice any official announcement about this thing. Was there any official experiment holding by Codeforces now?
If this is not a test, MikeMirzayanov please ban these accounts, it really makes the judging queue longer. I've waited for more than 5 minutes for a submission to be judged, its about 30 times longer than normal case. Thanks a lot, and sorry for my poor English.
By the way, is there a way to check when a submission was judged (not submitted)?
Image. I highlighted submitted time with yellow and judged time with green.
Reason for Queueforces
Exactly. Something needs to be done about these bots as soon as possible.
Maybe people are training AI models.