Boss-problem: https://codeforces.me/contest/2211/problem/E
check what time it took to solve E and F. F was easy for llm(it can be solved by free chatgpt version) E was hard back then even for frontier llms. I made a list ages ago and some of users already got banned. I look for TL 30 subs mostly. Almost all TL30 submissions from cheaters are identical, with only the variable names changed. Feel free to investigate it yourself!
- RockyYue 368584889
- XorGhost 368543854
- Nischaya008 368546936
- ayingna 368552115
- anuragthakur1089 368558531
- sahilsingh177 368572320
- Pain850 368572876
- FLY_lai 368574092
- geospiza 368574339
- codingforenjoy 368574470
- lcyxds 368575924
- niwrad 368578555
- akramnasiri73 368579842
- Baraa-Ahmed 368580217
- 504Timeout 368580377
- Hydrotherapy 368581104
- onlyfanz 368581832
- hushuqi_qwq 368582802
- NanYan 368583347
- NotDWT 368584424
- A10ne 368584754
- SpadeZ 368587088
- lihaochen 368587327.
- FableWeaver 368587327.
- GreedyButWrong 368588367
- Lol2004 368588466.
- aaa_Pigeon2 368591012
- Popusk3000lvl 368590516
- ggorelov_why 368591879
- Baskot 368594763
- aarav1118122 368595025
- Michael_Kravets 368593717
- thomaswmy 368589221
Some interesting cases:
1st LGM thomaswmy
https://codeforces.me/submissions/thomaswmy/contest/2211 Solved F in 6 min.
2nd LGM. NanYan
https://codeforces.me/submissions/NanYan/contest/2211 Got banned on Atcoder. Won prizes in official cf rounds. Solved F in 21 min. Sent CE sub twice. Struggled with E.
3rd IGM RockyYue Got banned on atcoder. Solved F in 13 min.
https://codeforces.me/submissions/RockyeYue/contest/2211 Won prizes in codeforces. Before chat gpt 5 release was hard stuck 2000 elo.
4th IGM FLY_lai Solved F in 8 min.
https://codeforces.me/submissions/FLY_lai/contest/2211 Won prizes in codeforces. Before chat gpt 5 release was hard stuck 2000 elo.
5th IGM geospiza.
https://codeforces.me/submissions/geospiza/contest/2211 Tested some rounds. Was hard stuck 2000 elo before chatgpt5 release.(even with 2k+ problem solved). Solved F in 11 min.
6th IGM XorGhost.
https://codeforces.me/submissions/XorGhost/contest/2211 First TL 30 sub for E. Solved F in 31 min.(he is smart one yes)
7th IGM aaa_Pigeon2.
Author of the next div1 contest. My comment should be enough.
Man, are you serious?
Just now I witnessed a brave person challenging the authorities against several competitors who had achieved good results in the Chinese Informatics Competition.
Hello, another Chinese cheater! You can downvote however you want with your cheating QQ groups, idc. Fortunately, you're not good enough to hide your cheating.
Yes, everyone is cheating!
Defender of cheaters. Your opinion is irrelevant.
Yes, we are both cheaters. You are definitely right.
Have fun and please don't google my name :)
Do you actually look at the round 1069..... i think it isn't a normal round. everyone just solve F super fast bur no one solve E.
F needs only a simple counting trick.
Thank you for providing no proof.
The finer details of the code seem too similar.
All TLE on test 30.
All skyrocketing in the AI era.
Must be a coincidence
NanYan
RockyYue
FLY_lai
XorGhost
tbf the structure is kinda similar to each other
Bro is judging whether someone cheated based on people not being able to solve a problem that was obviously placed in the wrong slot—F had more solves than E.
I can find at least 200 people who solved F but not E. Why not just ban all of them too?
IDK about the other ones, but I'm convinced that you are a cheater. Tho, I think that your point is right — E is 2500 and F is 2400
I have screen recordings of my recent rated rounds. Would you like me to provide them?
I should have already provided one for the THUPC Round, right? Also, the admins did not skip me—they simply deleted my participation record. A skip would clear all my accepted problems in that round, causing me to lose rating.
KAN had already asked me about the situation when I was preparing the contest. https://i.imgur.com/vW5LGKP.png
The submission was skipped, but the administrator probably believed I hadn’t cheated. Otherwise, they wouldn’t have deleted my contest record to prevent me from losing rating.
Afaik, skipped submissions will be deleted so that it won't affect the others' rating changes. I might be wrong tho.
it won't. For example this one:
https://codeforces.me/predownloaded/bb/7d/bb7da14ac92de741d9b8fb0a9d4791f2ece58422.png
I think it is because of he submitted some WA2 or so. And if the admins think that you are not cheating, they would remove the "skipped" verdict from the submissions so you can receive + delta (or — delta lol)
idk, maybe he was just too lazy. Since KAN never brought up the cheating issue afterward, all I know is that my contest participation record was removed.
Also, I was skipped in that round because someone was copying my code—as you would know if you had read that post—not because I was using an LLM.
How about the arguments that SirRogue said earlier? How can you defend those?
I checked it's becuase it was skipped, not submitting WA2
I use an alt because i can't only have 1 comment per 10 min. Admin just ban this account after i say it.
You can check https://imgur.com/vbhfx9f
Meanwhile XVIII...
If you were being as ridiculous as he was, you’d get banned too. And this was obviously a manual ban by the admins, wasn’t it?
orz aaa_Pigeon2
Does he know?
Skipped submissions appear in two scenarios:
1. You resubmit a solution to one of your previously "pretest passed" submissions in a div1/div2 contest, in that case only the last submitted solution will be judged and all prior submissions will be skipped.
2. You submit only once, but your submission matches exactly with someone's code (completely or to a great extent), which implies that you most likely cheated, and hence as a lighter action, your submission will not be graded.
Source: https://codeforces.me/blog/entry/13611#comment-185398
orz
Note: CheaterGotTalent told me this account isn’t his regular one and isn’t used for training.
He got WA2, then saw the pattern of the second test case, and he tried to do some tricks lol.
Why downvote this? 16777mt16 clarified that it's his (or her) mistake
Also, maybe I'm missing something, but that problem is from 2019, where LLMs are not strong. So, what's the point of including anti-ai text?
Thank you for providing CNOI contestants with fun before the NOI Day 2 exam.
Have fun.
And I should be a cheater too. In Spectral::Cup Round 2 and 3, I pass a harder problem and skip the previous one.
Wow, a "skipped" submission! What a cheater! Have fun.
Im having a blast rn.
You're right — in fact, anyone who was born after GPT's launch should be considered as a cheater. :)
"1st LGM thomaswmy https://codeforces.me/submissions/thomaswmy/contest/2211 Solved F in 6 min." bro literally accused an LGM for hacking because he was good
He is really that good. He solved F faster than all the other legit lgms. But I wonder what happened with E?
Six minutes for a problem that any free llm could oneshot, yet it took forever to get AC for E.
I have no interest in wasting energy proving that I didn't use AI. Thank you for acknowledging my performance. Wishing you a life filled with confidence and happiness.
It seems that my progress is not fast enough to be listed here. What a pity.
In fact, a question easy for LLMs is not necessarily difficult for humans, let alone this is only *2400 using a simple counting trick and it's almost well-known in Chinese Informatics.
Well, it seems like that your evidence is not very enough.The facts you have listed can't persuade me.
Everyone who has spoken to you will be marked as a cheater.It seems that you can only find a sense of existence through "catching cheating"
When you can solve both of them in the competition,we may have a check.
tourist solved the problem in 9 minutes, so he must be a cheater, right?
So your main point is that quickly solving an Ad-hoc problem is equivalent to cheating with an LLM?
Not really,I think his main point is if you can solve sth. gpt can solve and can't solve sth. gpt can't solve,then you are cheater.
I'm convinced that he is legit now.
I'm not entirely convinced, but I will admit this blog post is utter bullshit when it comes to evidence.
The recordings the he gave me is quite convincing, if you want, I can send you those.
lol
Honestly, this blog post is a load of bullshit to put it nicely. "Exposing" people simply because their code failed on a certain test case meant to disqualify slower solutions? Sure, there are some actual cheaters such as NanYan and others I won't mention to avoid continuing this useless drama, but suddenly because a cheater gets a TLE on a test-case means that anyone else who gets a TLE on that same test-case meant to find slower submissions gets falsely accused of cheating?
If you want more evidence, you should actually put effort into investigating not just looking at the most insignificant factors
Wtf why is there a war happening is there a purge on Codeforces fr?
How did you know!?
OMG I submitted A twice at r1108, one of them got skipped, does that mean I cheated?
So, how to deal with that problem at last?
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