So, hey Codeforces community, as I found some cheaters in Round 1117, I'm writing this blog to expose him! (This blog is not formatted by an AI model)
No 1. Their handle is swayam12, and as you can see, he's a pupil in just 3 rounds,
- Educational Codeforces Round 191 (Rated for Div. 2), Rank 5153
- Codeforces Round 1109 (Div. 3), Rank 7207
- Codeforces Round 1117 (Div. 2), Rank 60!
so, in his first 2 contests, he achieved a decent rank, in thousands, but in his 3rd round, as you can see his submissions:- https://codeforces.me/contest/2257/submission/387410016, https://codeforces.me/contest/2257/submission/387411590, https://codeforces.me/contest/2257/submission/387414976, https://codeforces.me/contest/2257/submission/387434259, https://codeforces.me/contest/2257/submission/387436423 (1 WA), https://codeforces.me/contest/2257/submission/387438401, He achieved a rank of 60, its a top-tier rank! Surpassing many some GMs, CMs, Masters! and most shockingly, in the following 2 submissions:-
https://codeforces.me/contest/2257/submission/387436423 (1 WA), https://codeforces.me/contest/2257/submission/387438401, he just changed his code within 4mins, and came up with a beautiful (though cheated) approach, and wrote a very long code within this short period of time!
2. Their handle is Snehasish123
They did participate in a few rounds before, (the very last round before Round 1117 was a Div 4 round) and here are their submissions of Round 1117:-
https://codeforces.me/contest/2257/submission/387404882, https://codeforces.me/contest/2257/submission/387414548, https://codeforces.me/contest/2257/submission/387419377, https://codeforces.me/contest/2257/submission/387421711, https://codeforces.me/contest/2257/submission/387457660, https://codeforces.me/contest/2257/submission/387461926 (though TLE but still counts as an attempt to cheat!)
In different submissions, they are writing their code with a completely different style and they are literally submitting and getting AC on Problem A -> Problem D under just 2 mins, just with there max solving of just 800 rated problems!
3. Their handle is chinoscode
They participated in both the rounds (Round 1117 and 1118) and here are their submissions for both the past rounds:-
https://codeforces.me/contest/2258/submission/388802177, https://codeforces.me/contest/2258/submission/388812658, https://codeforces.me/contest/2257/submission/387432426, https://codeforces.me/contest/2257/submission/387418987
They cheated so nicely that they renamed all their variable names and thought that we wouldn't know!
4. Their handle is harshwardhan_gh
They participated in Round 1117 and made these submissions:-
https://codeforces.me/contest/2257/submission/387403229, https://codeforces.me/contest/2257/submission/387406987, https://codeforces.me/contest/2257/submission/387411637, https://codeforces.me/contest/2257/submission/387439674, https://codeforces.me/contest/2257/submission/387447339
Normally, they were just solving 2-3 problems in a Div 2 or Div 1 + 2 contest, but suddenly in Round 1117, they jumped to Expert by solving 5 problems! Was the round too easy, or were they cheating? (btw, they just solved problem C of Round 1117 in just 5 mins!)
Ok guys, that's it for today, and MikeMirzayanov and KAN, please check on them to prevent cheating in future rounds, and thank you for beautiful platforms like Codeforces and Polygon
May all cheaters don't cheat
Auto comment: topic has been updated by marvyzy (previous revision, new revision, compare).
Auto comment: topic has been updated by marvyzy (previous revision, new revision, compare).
MikeMirzayanov and KAN plz ban these ppl.
Here's another cheater I found: MinaNiazizadeh
Just look at submission patterns
I thought that you are writing a blog about him/her?
umm, yes :3
These cheaters have just hided their submissions thinking they won't be caught, I think this feature on codeforces should be disabled, cause if disabled, anyone would be able to track cheaters and hunt them down.
You can't see the submissions because you are unrated.
ok, thx for telling me!
Notice the pattern every guy is Indian. honestly, i’m ashamed.
I love how you give us the submissions and explain nothing...
I am Harshwardhan, the last handle you tagged.
For context, I spent those months practicing quite a lot on CSES, LeetCode, and topic-specific CF problems. I solved 150+ CSES problems during this period, including DP, Graphs and Trees, alongside 200+ LeetCode problems.
CSES: https://cses.fi/user/415095 LeetCode: https://leetcode.com/u/dinoharsh/
So going from solving 2–3 problems to solving 5 after 2-3 months of focused practice isn't particularly surprising. If there is any concrete evidence of cheating in a specific submission, feel free to point it out.