Codeforces Round 1062 (Div. 4) Was full of cheaters, I thought they are getting removed in the rollback, but here was the rollback yesterday and the cheaters that were on the top of the standings are still there, so here is the list of cheaters I was able to collect before Codeforces stopped me from opening any more submissions, I'm may not say exactly some of the evidence as it may help them avoid getting caught in the future, but anyone can easily see it by browsing submission, note that I'll only write the problems I checked in the problem field, they may have cheated in some other problems.
| Handle | Problem(s) | Reason/Evidence |
|---|---|---|
| slyezil | All | Obvious AI code |
| ntokozo_dlamini | G | They forgot to remove the second #include when they copied the code |
| yethiraj | All | LLM code, comments everywhere, different includes in each submission |
| Technically_Inclined | E, F | Obvious AI and for problem F No normal person would name a variable total_kawaiiness |
| Just_Atwaa | All | Solved the entire contest in literally 3 minutes, Comments are everywhere in problem F, Obvious AI |
| WickedJohn | F | Obvious AI, Other submission are sus as well |
| DoYouKnowTheWay | E, F | Not a strong evidence but, suspicious switching between templates |
| krrish_852 | All | LLM code, most apparent in E |
| Hinomori_Shizuku | All | Obvious AI in E, using multiple languages in G |
| shivam_1886_ | F, G | Solved G in two minutes, obviously AI generated code, changes in coding style |
| artinm | F | Duplicated #include , which pretty sus, variables names feels intentionally changed,also solved F in 5 minues, also they used a slightly different coding style in the next contest |
| yusuf_m0hammad | All | Obvious AI |
| ltyzsl | F, G | Changing includes |
| shubhamwip | F, G | Changing includes, total_kawaiiness in F |
| trungdangbuon | F | Matching submission with yethiraj (links: https://codeforces.me/contest/2167/submission/346297161, https://codeforces.me/contest/2167/submission/346249074) |
| Zelda_ | F | Matching submission with BaseDonnees(MadMax101x: 346259801, FinalBoss: 346271990 ) |
| de_quoi_jai | E, F, G | their code for E and F is too huge to be written in 6 minutes and is too similar to most other cheater |
| Gemini__ | All | Mostly someone using a burner account to test Gemini, all submissions are AI |
| kksai0410 | E | Too close solution to ntokozo_dlamini (links: https://codeforces.me/contest/2167/submission/346278556, https://codeforces.me/contest/2167/submission/346251778) |
| BaseDonnees | F | Matching submission with Zelda_(MadMax101x: 346259801, FinalBoss: 346271990 ) |
| Eng_Ahmed_Saleh | All | Obvious AI |
Codeforces should really improve the plag check, a lot of these cheaters didn't even make any effort to hide that they cheated and they still didn't get caught, also a lot of submissions are identical, the Plag checker should at least catch those....
21 out of the top 27 are cheaters, that's about 75%, which is not a good percentage of cheaters to have on the top of the standings.
Ban Them
even in the current ongoing contest Educational Codeforces Round 184 (Rated for Div. 2) theres this user his handle name is @gua069 is cheating and is in top 20 currently. Mind you he was banned twice from cf for cheating, his previous account name was arnabmanna
Is there even option to report cheating? I have found several instances of obvious cheating in div3 rounds, in the form of:
if(n == 785642) {return;} else {*Do correct solution*}
And than they hack themself with that specific input.
But i never reported any of them, because i dont know how...
There is no official way to report cheaters, but for div 3 hacks does not affect the score/rank, so hacking yourself is just useless
Ask mike
cheater epidemic has nothing on tonga
sometimes fixing your codes or just testing what you are learning from an easy div like div 4
like i cant register unrated to practise in a certain time
in addition somecodes are auto complete with my IDE "visual studio " like if i was truly cheating all the time u wouldn't have seen the ups and downs in my profile
but you also have skipped submissions in div2 rounds, so that excuse doesn't work
in addition somecodes are auto complete with my IDE "visual studio "that's not what you're getting flagged for, unless you're generating the entirety of the codenope i dont generate any
even sometimes if im totaly stuck i just check on the fix for the error and try to write it myself afterwards
like u can check on my profile why would i cheat anyway if im going up and down between ranks? if i was cheating maybe i would've hit expert by now
i've been training for more than a year and being inconsistent
so funnily i find out about this blog now :^)
P.S just noticed ur part about div 2 , i had power outage that day and i couldn't continue solving in the last one , even i remember there was a div 3 that i couldn't solve a thing in it but kept trying. Its just weird
Your max rating before the contest was pupil, you shouldn't call a div 4 easy, additionally, what prevented you from registering as unrated? it's allowed for div 4s, or even if you can't that's not an excuse, find any other contest that's not currently running and solve it.
Also, can you explain the similarity between these submissions?
E- https://codeforces.me/contest/2167/submission/346268253 https://codeforces.me/contest/2167/submission/346258698 https://codeforces.me/contest/2167/submission/346248008 https://codeforces.me/contest/2167/submission/346307909 https://codeforces.me/contest/2167/submission/346301919
G- https://codeforces.me/contest/2167/submission/346296577 https://codeforces.me/contest/2167/submission/346255605
This does not seem to be just auto complete, the solution are way too close to not be AI generated...
Also you have two other skipped contests, so "if i was cheating maybe i would've hit expert by now" you would have reached expert by now if you didn't get skipped in them, the performance you did in this div 4 is actually closer to a candidate, so claiming you are inconsistent in training contradicts your performance in that contest.
Another thing, commenting on that blog was not a smart thing, as it made it re-appear in recents, so if it was not noticed before you now made it more likely to get noticed
even ignoring code similarity, there are tons of other things wrong with their submission history :(