Mike, alts and unfriendly comments I know that the following content might not be welcomed and I will lose lots of contribution, but I should write something about such a bunch of chaotic comments under there. I may delete this tomorrow if I find my words useless. ### What happened Several months ago, Mike posted a blog about banning [user:orzdevinwang,2024-10-07]'s alt, [user:zh0ukangyang,2024-10-07], and more alts. Lots of participants, including myself, were angry because [user:zh0ukangyang,2024-10-07] is such a talented coder and codeforces didn't treat the rule of single account seriously at that time. Then more and more alt accounts with high rating are reported, including mine. After that I didn't use alts anymore, and most of high-rated Chinese participants(100% in my friends) discarded their alts and followed the rules. We might think that the rules are not that perfect, but rules are rules. I believe that no one will say "Banning [user:zh0ukangyang,2024-10-07] is unacceptable". But I know what y...

Full text and comments »

Psychotic_D AKA Dhruvil Kakadiya CHEATER !!! EXPOSED !!!!!! Today I want to talk about Psychotic_D AKA Dhruvil Kakadiya from Nirma University who claims to be a LEGIT IM but the reality is far from LEGIT. Today another blog was written by a person exposing him for the person he is but him and his so called friends made that blog vanish. Thats the platform of Codeforces for you where exposing cheater is secondary and cheating and maintaining their rating in anyway possible is primary. So, here we are with another blog with more proof that [user:Dominater069,2024-07-21] requested. Below are some of the past contests submission done by [user:Psychotic_D,2024-07-21] which he claims is done because to check if he can solve harder problem and maintain the rating or not but in reality he waits for his friends group which includes some of the testers, GM, IM. As you have heard his friend [user:wuhudsm,2024-07-21] has been exposed for using many rejected and proposed problems for the contest which i must tell u Dhruvil had the access to. He along with...

Full text and comments »

My Review about Scaler academy. To all my Indian juniours and experienced professionals, Never join Scaler Academy(Interviewbit). Hello, I was enrolled in Interviewbit(Scaler academy) course in May, 2019. I belongs to tier 3 college. Only companies with max 5-6 lack per annum comes to my college. In a hope of getting into good companies I decided to join Interviewbit. I qualified their entrance test which is hard in itself for many average coders in India. Then in a hope of securing good referrals, I used to maintain my Problem solving Percentage above 80% most of time. When the time of referral come in september — october 2019, they were saying that, right now companies are hiring for on campus and thus we will refer you around November. I believed them. Continued to solve problems working day and night, burning the midnight oil, just in a hope that if I get a referral of good companies. Now, when when it is november 2019, they came up with new excuse. They told that we are in talk with top tech companies, you will soon hear good news from us. Then many days passed. Nothing happened. I was still hopi...

Full text and comments »

Exposing Mass cheating in today's Div(1+2) And last Div2 round Last time, I was talking about Abhipsita Das, who is the head of Indian cheaters. After my series of blogs was taken down and I received no reply to my personal messages regarding this from any officials, I am now showing you some solutions that have not been addressed so far. These codes are from Abhipsita Das <spoiler summary="Sample images of 1989C : Two Movies"> <spoiler summary="1">  </spoiler> <spoiler summary="2">  </spoiler> <spoiler summary="3">  </spoiler> <spoiler summary="4">  </spoiler> <spoiler summary="5">  </spoiler> <spoiler summary="6"> ![ ](/predownloaded/07/fc/07fca9f5fd08539a...

Full text and comments »

First RED-INDIAN AI Cheater? **NOTE: RED INDIAN IN THIS BLOG DOESN'T REFER TO THE NATIVE AMERICAN RACE. IN THE CONTEXT OF THIS BLOG, RED-INDIAN REFERS TO AN INDIAN WHO CHEATED HIS WAY TO RED, THAT IS, GRANDMASTER.** The person I am going to talk about here is none other than the most recent Indian Red Coder [user:arnabmanna,2025-04-27], who achieved this feat in the last Division 1, [contest:2097] after solving 4 problems and getting a Global Rank of 62 and India Rank 1 in the contest, giving him a whooping 119 rating boost. Such a jump not only made him red but also made him surpass 2 existing Red Coders [user:cerberus97,2025-04-27] and [user:invertedwinger,2025-04-27] in all time India leader board, making him the 5th highest rated coder in India and 582nd Globally. His progress seems very inspirational (for a certain group of people who follow his footsteps) since he achieved this feat with just 425 problems solved for all time, 74 of which happen to be 800s. Not just this, he went from Newbie to Gr...

Full text and comments »

Looks like OpenAI cooked with GPT-5.5 Some updates: - AI solved A, B, C, D, E, F, and H in this round (reference: [user:bugfeature,2026-04-25]). A cheater that gave the problem statements to GPT quickly would have placed at rank <= 4 in this round. I'm not sure about G, as most cheaters had already been banned by the time I checked, but looking at [user:JohnNash01,2026-04-25], it seems plausible that AI might have also solved it (which would imply the first(?) div-1 AK by AI, and also rank 1 for a fast enough cheater). - Tourist has now been defeated by AI cheaters in the two most recent div-1s. GPT has turned out to be the real [user:conqueror_of_tourist,2026-04-25] we made along the way. - In an entirely unrelated turn of events, [user:Panda_V,2026-04-25] is the new Indian GOAT, swatting aside [user:Dominater069,2026-04-25]. We're being ushered into an unprecedented golden age of Indian competitive programming. I think copes like "just get to 2100, there aren't any cheaters in div-1" are clearly invalid now. Rat...

Full text and comments »

Hello your computer has virus: A case analysis how the current issues on CF and how to solve them Now I know what you're thinking... "oh no. hes being racist again" however, if you would so kindly look at any recent standings, especially ones which favour the timezone of indians... (like the last div1,div2 combined round...), you would notice quite the coincidence. And if you think, oh well Codeforces is fucked... you would be wrong Codeforces gets the short end of it, just look at meta hacker cup round 3, and compare it to any other year. Now is calling out Indians racist? Without valid reasoning that they are the supermajority causing issues, yes. However, I believe I have valid enough reasoning. If the pure statistics don't convince you that we must target punishments towards India/bangladesh/pakistan?/basically that geographic region, then why not use logic instead? Why do these people want to cheat? Well I've asked a few who obviously, I will keep anonymous. Simply put, its peer pressure. Somehow, most likely due to government corruption and other political things...

Full text and comments »

Please Ban Arnab Manna (Grandmaster Cheater) I want to request some sort of strict ban of a big cheater [Arnab Manna](https://www.linkedin.com/in/arnab-manna-01dev/) violating all contest rules. <br>  [user:arnabmanna,2025-06-27] is the first Red (GM) Indian Cheater who got banned not so long ago. We still see his account in the top rankings of the country. He has restarted cheating using his alt [user:Destroyer0069,2025-06-27]. <br>  Proof that both accounts are owned by the same person: https://codeforces.me/blog/entry/142161?#comment-1282677 <br> (He was in the organization MSIT, Kolkata with just 4 active members, out of which 2 were [user:arnabmanna,2025-06-27] and [user:Destroyer0069,2025-06-27]. I found it suspicious, then I noticed similarities in their submissions, language, and the fact that the new account was created right after his main one got banned. He chan...

Full text and comments »

About Cheaters on Codeforces Hello Codeforces! Recently there was a big sensation about cheaters on Codeforces. Some people stared to write comments like this: _"Indians are cheaters! They can't do anything!"_ I am very worried about this. **Don't you think that send hatred to the whole nation is a disgusting thing?** How many cheaters are there on Codeforces? There are approximately 100.000 users on Codeforces, while approximately 30.000 of them are Indians. How do you think: how many cheaters are there on Codeforces? Maybe 500, or 1000, or even 2000? It doesn't really matter, because you can already see that **only a small percent of Indian coders can be cheaters**. Even if it is true that many cheaters are Indian (i don't think so, but some people do), it is a deception that many Indians are cheaters. Yes, there are many gray Indians. But it is not because India is a bad country, it is because it is fast developing country, and now there is a big increase of Internet users and coders. And at last...

Full text and comments »

My Quest to Answer the Ultimate Question Through Machine Learning: If a hamster was born in aquarium, does it become a fish? `If a hamster was born in aquarium, does it become a fish?` &mdash; Rotavirus 2021 When the hour hand is way past twelve and the sky is dark, I often find myself pondering about this question, alone. Of course, a hamster is a hamster, and it cannot just become a fish right? But then again, if its mother gave birth to it inside an aquarium, then who's to say the hamsters didn't acquire a critical mutation that gifted them the ability to breathe underwater, transforming them into fish? I would be awake at 3 am in the morning, frustrated and defeated by this cruel dilemma that I cannot seem to solve. But, Rotavirus must know, right? After all, he was the person that proposed this rhetorical question, so he must have the answer to his own question! If I could just ask him, maybe, just maybe... Yet fate cheated me once again: Codeforces has permanently banned Rotavirus &mdash; I can no longer ask him. All I have left are only pieces of clues and hints scattered around his commen...

Full text and comments »

CELEBS WHO CHEAT EPISODE 1 - STRIVER Hello Guys! Welcome to the first episode of my blog series where I expose the best cheat.... I mean coders that are popular among us. I am planning to release further episodes in this series based on thorough research along with the evidences (If this blog isn't taken down unlike the ones that were initially written against big names like [user:Psychotic_D,2024-09-20]). In today's episode, our celebrity star is the most popular Indian DSA coach, [user:striver_79,2024-09-20] aka Raj Vikramaditya. If you are a coder from India, it is impossible that you don't know this guy. For those of you who aren't Indian, [THIS IS HIS YOUTUBE CHANNEL](https://www.youtube.com/@striver_79). Although a lot of the content on his channel is free, this guy has minted a lot of money from the people who are beginners in DSA or preparing for placements by selling his courses. I am not here to comment on his business strategies of first giving something for free and then selling his services like referrals ...

Full text and comments »

Explained: why you are stuck between pupil and expert Hello everyone, In this blog, I have given some relevant logic on why you are stuck between pupil and expert. Please at least skim through the text once to get the idea. I am a noob-coder so, don't expect some algo material in this blog. However, if you are stuck between pupil and expert and feeling sad (like I do) because we are not getting any motivation, as the hard work we put in doesn't correspond with the result, then this blog is definitely for you. I started code forces in mid-2020, wasn't regular gave some contests that time, I had zero knowledge of any DSA concepts. Barely knew STL, and now I have done DSA and Advanced Algorithms courses in my college, in which I performed greatly. Solved all the standard questions of DP & graph. But apparently, I am performing worse than before, so I went to the old contest that I have solved previously in which I was able to solve A and B getting me to a rating around 1340, I was easily able to solve A, B and C under 45 mins. I r...

Full text and comments »

Invitation to IIT Hyderabad Code Clash 2026 Hello Everyone! Infero, the competitive programming club of IIT Hyderabad is glad to invite you to Code Clash, our programming contest conducted as part of our annual techno-cultural fest, Elan & ηVision. The scoring will be based on the ICPC format. It is an individual event, no teams will be allowed.The contest is open for all to participate. **Contest details:** - The contest will be held online on Codeforces. - Start Time: [14:00 IST on 11th January, 2026](https://www.timeanddate.com/worldclock/fixedtime.html?msg=Contest&iso=20260111T14&p1=505&ah=2) - Duration: 2 hours. - All the problems were created by [user:nimish.agarwal.2006,2025-12-29], [user:atigdng,2025-12-29], [user:HyperBoolean,2025-12-29], [user:Adamant18,2025-12-29], [user:FranXenoz,2025-12-29], [user:COdERBRO513,2025-12-29] and me. - Special thanks to [user:Ceilings,2025-12-29], [user:Siddarth_MSR,2025-12-29] and [user:Titan493ASST,2026-01-08] for testing the problem set and coordinating the event. **...

Full text and comments »

cheaters aren't hiding anymore This cheater [elour](https://codeforces.me/profile/elour) posted [div 2](https://codeforces.me/contest/1983) [B](https://codeforces.me/contest/1983/problem/B) solution in a blog while the contest is running ,now they are cheating on Codeforces without hesitation in front of everyone. i saw this [blog](https://codeforces.me/blog/entry/131220) that has a very interesting idea to reduce cheaters. Additionally, there was a blog about adding a phone number to verify accounts. These ideas could actually reduce the number of cheaters on this site because cheating is ruining it. Thank you telegram indians, for ruining this website for some rupees.

Full text and comments »

Bigger_Fraud_Than_KARAN Hello Community, Hope you all are safe and well. This blog is not about Cheating but about a more serious issue where some fake Coders who have earned rating by Plagiarism and Cheating target beginners and sell there Courses on unbelievably high price. One of the fraud was caught few days back, I will be busting other one today. Recently Karan Gujjar was caught here who called himself as one of the best coders of India and also advertised himself a lot. He then used his popularity and fake reputation to do fraud and started selling useless Courses for around 1500-2000 bucks. Now I am noticing a bigger fraud from few days who is selling his course for around 12000 Rs (Indian Currency) . He has also build his fake reputation due to his high ratings on CodeChef and Codeforces. This blog is not about cheating as catching Cheaters is responsibility of the Site on which contest is currently running but Since apart from Ratings this guy does not have any achievement in Competitive Pro...

Full text and comments »

Getting Funnier day by day So we all are gonna appreciate experts ([user:sonsimpmiku,2026-03-17]), newbies (countless) and even unrated indian ([user:Ser_arthur,2026-03-17]) accounts holding the top of the leaderboard just because they are not caught by System Testing ? I mean they should be banned immediately by common sense. Any sensible person can tell that these are cheaters. Just so funny that they are still at the top lol. I mean just look at [user:sonsimpmiku,2026-03-17] holding the first rank as if he truly deserves that spot lol. Shameless. They should be banned immediately with a little bit of common sense i should say. I mean who writes this in their code except for LLMs (though idk many may write this but surely this person ([user:hungbui,2026-03-17]) dont): ~~~~~ int n, m; if (!(cin >> n >> m >> mod)) return 0; ~~~~~ If it was a div 1 or div 1 + div 2 contest then they would have been banned immediately but nobody cares about ratings of div 2 people. Well that's just hilarious. **[user:M...

Full text and comments »

I love codeforces and It's the Best platform my rating in codeforces was not increasing so I switched to codechef. so after 2 contest I realised that there is no point in spending endless hours in codechef. after every contest there is so much cheating going on and codechef doesn't even checks it. code chef admins are sleeping and don't understand anything.. and more over they keep contest of 3 hrs.. where at last 30 min submission jump like anything which clearly is sign of cheating.. codeforces is very safe and there is very less cheating takes place.. all thanks to Mike Sir for example https://www.codechef.com/viewsolution/51611151 https://www.codechef.com/viewsolution/51611097 https://www.codechef.com/viewsolution/51610983 https://www.codechef.com/viewsolution/51610818 . . . . I can give you endless example of cheats .. but there is no point Indians are cheater and there nature is to cheat which affects others .. MY HUMBLE REQUEST Stop participating in code chef contest.otherwise you will ...

Full text and comments »

Why do Indians cheat so much? Is it just my impression, or do Indians always appear on lists of cheaters—and in large numbers at that? What’s more, they even firmly deny it when caught.

Full text and comments »

Maybe a Solution for Cheaters? As an Indian, I share the frustration caused by cheating in online assessments (OAs). It’s disheartening to see that some individuals resort to using external help to cheat. Recently, Google visited our campus and shortlisted candidates based on resumes without conducting an OA due to concerns about cheating. While it might be challenging to completely eliminate cheating in OAs, I’ve noticed that during LeetCode’s Sunday contests, which start at 8 AM Indian Standard Time, the number of submissions is significantly lower. This could be because cheaters are often too lazy to wake up early. Therefore, a potential solution to reduce cheating could be to schedule contests at inconvenient times, such as 4 AM, to deter those who might not make the extra effort to cheat.

Full text and comments »

Invitation to CodeHurdle Athlos 02 Contest — February 16, 2026 Hello Codeforces! After the successful conclusion of our first round, the CodeHurdle team is excited to announce the second contest in our series: **CodeHurdle Athlos 02.** Our goal remains to provide high-quality problems and a competitive environment for the community.  We invite you to join us for this 3-hour challenge! ### Contest Details * **Date:** Monday, February 16, 2026 * **Time:** [contest_time:670769] * **Duration:** 3 hours * **Problem Count:** 7 Problems and 1 Interactive Problem * **Platform:** The contest runs on **Codeforces** (Gym/Mashup). * **Registration:** **Mandatory** at [codehurdle.com](https://codehurdle.com). The problem setting panel are: [user:amartya110,2026-01-14], [user:Lucifer_K,2026-01-14], [user:mahesh_9996,2026-01-14], [user:mediocre,2026-02-16]. The testers panel are: [user:Ajay_2705,2026-01-16], [user:amartya110,2026-01-16], [user:mahesh_9996,2026-01-1...

Full text and comments »

It feels good I think most of Indian cheaters have started to understand that practicing frequently asked problems on Leetcode is lot better than cheating on codeforces or any other similar platform . Also I can see slowly companies are also realising that hiring based on rating on these platforms would just harm them . It feels good that codeforces will slowly become cheaters free . Also kudos to codeforces team for putting so much effort in removing them . If you are still cheating I would like to know the reason .

Full text and comments »

Indians have to get mass banned Cheating will have no other solution. It has gotten extremely bad and it's not racism. If your culture is designed to cut corners then it's normal to be banned from places where fair play is the norm. I'd understand 1 or 2 cheaters but so many is defeating the purpose of this entire platform. Even people who worked hard for their ratings are doubted right now because 60% of CodeForces participants are cheaters. Indians HAVE TO GO!

Full text and comments »

A very simple solution to Codeforces cheater problems. Can we considering move the contest time to sometimes when Indians couldn't participate? Like almost half (or even more) of the indian accounts ever do is waiting for paid solutions to get out and cheat during contests. This will also allow the US participants to participate. The start time in the US east coast is 9:30am and 6:30 am in the US west coast. The contests will have a lot more high quality participants rather than just a bunch of Indian cheaters. We can keep most of the contests schedule to current time, but once or twice a month, we could have a contest during 12am to 6am India time so that a lot more US participants can do contests, and free (almost) of Indian cheaters

Full text and comments »

a new cheater! hello codeforces today iam going to introduce this bad cheater [user:vjudge36,2023-03-16] he stole the vjudgian theorem from me and then he published the theory on his account telling you that he was the creator of the theorem hope this cheater banned from codeforces Sorry for bad english because i'm indian

Full text and comments »

Cheating in any form should be banned It is well known that 1_2_3_4_5_9 is an Indian cheater who sells his code on Instergram for a high price. He also has two alts 10_11_12 and 14_15_16 to do this, which seriously breaks the fairness of Codeforces' rules. It also gives Indians a bad image on Codeforces, whether they cheat or not, which is unfair to the people who don't cheat and get blamed for nothing. I think we should tighten up on "cross-programming language" cheating (many generative AI can now convert code from one language to another), and let's hope Codeforces' anti-cheating system adds this functionality. I also salute MikeMirzayanov for his contribution to Codeforces, I know he has a lot on his plate, but I hope he will look into this massive cheating incident at some point in his spare time, thank you for reading.

Full text and comments »

[Feature Request] Report Code as Cheating Since a really huge number of cheating taking place in CF nowadays in every round, this "Report Code" feature for stopping and removing cheaters from this platform is much needed. Just look at this screenshot below. A youtube channel and their views for the solution of a problem during the contest. <br> <img src="https://i.ibb.co/0CxHd3m/Screenshot-2022-09-26-103532.png"> </img> <br> This is just a single youtube channel. There are tons of other youtube and telegram channels who does it on a daily basis. <br> Even if half of the people shown in this picture cheat in the contest then it's huge. Especially people like pupils who are rated like 1200-1300 suffer a lot due to this. An increased number of solutions on problem C specially, says how cheating is spreading like fire. Please stop this thing. Don't be an Indian who cheats. Be the one who is genuinely good. I am really sad and frustrated about this happening every fucking day.

Full text and comments »

Yet another cheater [user:aa088] I was browsing X and came across this: https://x.com/aaci008/status/1918220240443355562 Seeing they were Indian, I made a very random guess which of course turned out to be true. Their genius submission to E from last contest: https://codeforces.me/contest/2108/submission/318011777 Great job, [user:aa088]

Full text and comments »