Oh yeah, I did notice that there are a lot of cheaters in Div2G/Div1F, and we know a few types of solutions that we believe are from either a strong LLM or a leaker. Fortunately, the number of ACs here are not in the thousands, so it shouldn't be hard to sort most of them out, and I think a majority of them will be skipped/banned in the usual plagiarism check.
That being said, the CF admins (and myself) are busy people, and we can't just check all submissions on every problem, as well as every blog about cheaters. So I think it's better to group the reports in one place! Please write down in the comments here if you find either:
- One submission/user that seems to have blatant evidence of LLM cheating
- Multiple submissions that look abnormally similar to each other (either in code style, or code logic)
Please note that case 2 doesn't include when it's about one solution that obviously almost everyone will implement, just like Div2D's intended solution.
You don't have to (in fact, I urge you to not) include the precise evidence in the comment, we have eyes and basic critical thinking abilities.
Thanks for your understanding!








Wow you just destroyed all of the snitches out there
Well do you want to show the evidence where all cheaters can also see
longago_06 — Exact Description of what you are looking for.
Oh he’s definitely a mastermind. Absolute legend. Ranked 299th out of 309 teams at ICPC Amritapuri Regionals, solving just 2 problems — clearly saving his real power for Div1F. https://www.linkedin.com/in/ayushforyou/ — his LinkedIn
well he didn't even solved those 2 problems, his both teammates solved the 3 problems, he didn't solved any problem in icpc
A lot of people cheated in D2 E as well, putting some of those here
Link 1
Link 2
Link 3
Link 4
364100028 Details here: https://mirror.codeforces.com/blog/entry/151524
Why there have been certain users who have written an O(N + Q) code for F1, the intended complexity for F2 as well and still refrained from submitting it for the harder version (with sufficient time left to submit)?
So, I guess this should be conclusive evidence unless they report some reason other than 4.
1 sounds oddly familiar......
So, I guess the contestants claiming it would go on to win a gold medal in Dubai :)
2 is a very good excuse =)
Maybe, that 2nd reason was intentionally a tribute to you. (Actually, it was)
I'm still looking for more cases — any submission could help us gain insight about what to look for during the usual plagiarism check!
A1 and A2 were submitted at nearly the same time, and the user solved 4 problems within a short span of time. Flagging for review.
https://mirror.codeforces.com/contest/2201/submission/364092935 https://mirror.codeforces.com/contest/2201/submission/364092808
Some people are submitting solution after doing two questions may be the it's the reason.
Please take a look at the following submissions.
From this guy, any submission from A to C2. In particular: B, TLE and B, AC
E
E
G1
shri_raj her code contains a lot of questionable comment along with a lot of unused lines and using algorithms that contrast each other
joining 2 weeks ago to rank 8 is crazy work
idk tho, i have a lot of friends who is rlly good at coding before, they just don't know about codeforces yet:|
she has weird spacing though, and for some problems she defines t as 1 and then takes it in, while others t is undefined.
went from doing 800s to div2 e and above
Finished writing this in just 5 minutes.So crazy......
https://mirror.codeforces.com/contest/2202/submission/364042458
And the O(n + q) code for G1 wasn't submitted to G2, she rewrote a new one.
Wasnt even close to the G1 lol, chromate00 is a absolute genius when doing problems like this to bait cheater;D
AC submission 1
AC submission 2
AC submission 3
Its been quite a while since he has been doing this.
qp
darkpupil its_true white.eye
among others...
Bro must be the fastest human alive he even rewrites the entire outer structure from scratch every time.
submission only from round 1082
364072051 364068800 364070906
temurbekubaydullayev700 Check out he's submissions in Codeforces Round 1084 (Div. 3) he also cheated in the past
Bro, there are so many people using LLMs even for Div 3/A. The same kind of solutions are everywhere in today’s Div 3 contest. I seriously don’t get what’s wrong with them.
saisridhart. His profile and submissions.
Instead of comments or distributed cheating allegations throughout the blogs and comment sections, what about a report system ? Similar to LeetCode. Where we can report users, possibly with some explanations too (optional).
From the CF Admins' end, they can sort the cheaters based on the number of reports, and maybe that would simplify some of it? [Just my Opinion]
AbdX is a cheater. he cheated in round 1082, educational round 187 and round 1083. it is pretty obvious, he even didnt remove comments of AI generated code. i would like to inform chromate00 awoo and Leftist_G to take action. this chetaer needs all of its contests get skipped.
I am not cheater and there are people who have comments in their codes and and I know two programming languages: C++ and Python
Any idea on when will rollback happen after all this?
When the time is right
re0i.
Coder-Ramesh