@admin
https://www.codechef.com/viewsolution/55152011
https://www.codechef.com/viewsolution/55153098
https://www.codechef.com/viewsolution/55149655
I am really happy 4-5 accounts of my college students (who cheat) are banned!
check then out too…
Just tell me the name of codechef contest in which cheating wasn’t happened.
1 Like
In the recent contest December Cook-Off 2021, Div 2 problem 3rd
, I found that these solutions to be exactly same and also these solutions
were submitted in the last few minutes of contest:
Admin, Please take some action
https://www.codechef.com/viewsolution/55192944
https://www.codechef.com/viewsolution/55193454
1 Like
there is hell lot of cheating in last 30 min …
so please admins reduce the time of contest from 3 hours to 2:30 hours .
Congrats! The admins did exactly what you asked and reduced the contest duration to 2:30 in December CookOff . The crowd of all these last minute cheaters arrived between 2:31 and 2:59 and they were very surprised to see that the contest is already over. Now their evil tricks can’t possibly work and the honest participants are happy to see that massive late submissions of plagiarized solutions are not happening anymore…
Oh wait, maybe that’s actually not the case. Could there have been some flaw in your logic?
Nah, bro, Cook-off used to be for 2.5 hours previously. They changed the start time of the contest but didn’t change the duration. I don’t think cheating has reduced. It’s something we can’t reduce at all.
Anyways, my rank in the last 30 minutes:
Indeed, you are right. Thanks for the correction! Still the last contest demonstrated that a shorter 2.5 hours duration doesn’t really help. While a lot of people desperately think that contests duration reduction would be a good idea, as shown by the voting results here.
In fact, I think that contest duration reduction may actually make it harder for honest participants to outrun the crowd of cheaters. In my Div.2 contests, I typically landed somewhere around either rank 100-200 or rank 500+. Depending on whether I could solve more problems than cheaters (or solve the same number of problems, but faster). Not sure what’s the actual reason behind that, but cheaters tend to be somewhat “honourable” and delay submission of their plagiarized solutions until the very end of the contest. The same crowd of cheaters arriving an hour earlier with the same set of solutions would only make everything harder for us.
2 Likes
So this has been happening a long time and it is starting to affect all legit coders. It is almost impossible to reach 4* until we really give 5* performance which makes no sense. After having a rank of 360 in the first 30 minutes of December lunchtime was relieving. C looked tough. Although I don’t really have an idea of how easy it was but after going through submissions of many people, every 1/3 submission I saw was exactly the same like even variables same and many of them had the exact same code submitted. Easy 100% plagiarism. Is the CodeChef plagiarism checker even working?!! Like this is a huge problem. Even 100% plagiarism submissions are not getting flagged. Take a look at these solutions.
https://www.codechef.com/viewsolution/55456707
https://www.codechef.com/viewsolution/55456714
https://www.codechef.com/viewsolution/55456827
https://www.codechef.com/viewsolution/55456870
https://www.codechef.com/viewsolution/55456871
https://www.codechef.com/viewsolution/55456649
https://www.codechef.com/viewsolution/55456511
https://www.codechef.com/viewsolution/55456441
https://www.codechef.com/viewsolution/55456423
https://www.codechef.com/viewsolution/55456406
https://www.codechef.com/viewsolution/55456327
https://www.codechef.com/viewsolution/55456245
https://www.codechef.com/viewsolution/55456185
https://www.codechef.com/viewsolution/55455786
These are only like from last 30 submissions i saw. Don’t really know how many copied the same exact code with same variable names.
3 Likes
There is cheating in huge numbers in every contest. Its alright if performance is decent but in case if we miss out on a problem and a lot of people cheat on it then rating decreases by a lot.
And like this it is becoming impossible to get ones rating increased.
I know that codechef cares the least about it but maybe codechef is not worth participating at all and only good for practicing.
3 Likes
not good for practicing also
1 Like
@admin
same solutions in code drive
https://www.codechef.com/viewsolution/55639560
https://www.codechef.com/viewsolution/55639093
please take some action
1 Like
Dear admin,
The problem having problem code: MEANIDIAN has various submissions which are exactly the same. I was looking into some submissions to check how they have done it. But I am really shocked to see people are having the exact same solution.
Refer solutions mentioned below:
https://www.codechef.com/viewsolution/55907447
https://www.codechef.com/viewsolution/55907377
https://www.codechef.com/viewsolution/55907305
https://www.codechef.com/viewsolution/55907280
https://www.codechef.com/viewsolution/55907250
https://www.codechef.com/viewsolution/55908542
https://www.codechef.com/viewsolution/55908478
https://www.codechef.com/viewsolution/55908456
https://www.codechef.com/viewsolution/55907208
https://www.codechef.com/viewsolution/55906587
These are only a few of them. I just dont waste my time checking all submissions. I guess you as the admin should ensure free and fair participation. If not, you are responsible to take action against the guilty. I request you to consider suspension of user id those who are involved in this.
Thanks
6 Likes
@admin
this guy @aryan7002 uploaded the solution of XORED question from long challenge january 2022, and after that hundreds of users uploaded same 300 line of code that he provided. I was shocked to see that after 1 day the submissions were around 30 and the next day after this guy uploaded this video (9 January) there was a sudden spike in the submissions of that questions. I was suspicious and i searched Youtube for the solution and i found this, luckily it wasn’t hard to find his codechef id since he used SAME NAME ON CODECHEF AND GITHUB. it is very clear that he cheated and he should be banned.
I COULDN’T ATTACH 2 SS SO I GAVE THE LINK OF HIS CODECHEF PROFILE. YOU CAN CHECK THAT EVEN HIS PROFILE PICTURE ON CODECHEF AND GITHUB IS THE SAME
2 Likes
After completing my yesterday Cook-Off I was looking for the rest of the problems which were not solved by me and while up solving them I thought to take help from YouTube and guess what weird thing I notice.
Few of the Videos on YouTube Have been posted matching with the timeline of the real contest. This was really embarrassing as I noticed most of them were Indian YouTubers. I urge thereby Code Chef to temporarily Ban their account If they can or any way they can penalize such steps to maintain the essence of the contest.
Here I am attaching those links to show you!!
Link1
Link2
Link3
Link4
There is a person who sells his code for 20 Rs. Lol 
Rest it is visible only in the You Tube itself you can verify that.
2 Likes
vits_cs201077
this man is cheating in long challanges of january
https://www.codechef.com/viewsolution/56730647
https://www.codechef.com/viewsolution/56717719
https://www.codechef.com/viewsolution/56679677
he became 3 star coder just by cheating!!!
code chef id
vits_cs201039
he is cheating in long challange
https://www.codechef.com/viewsolution/56945598
https://www.codechef.com/viewsolution/56972754
https://www.codechef.com/viewsolution/56955286
I have left lunchtime in between to write this up. Solutions are uploaded everywhere before the end of contest. Contest has turned into absolute joke. I do not blame codechef at all for this. They cannot go behind everyone who leaks soltuion.
But as a participant it becomes hard to increase ratings which creates a cycle of negativity. It is certainly good for practice but for participation this is certainly not the right platform.
I guess I am supposed to practice a lot before being eligible for a rating increase.
7 Likes
Seriously dude , I can bet more than 50% of the people cheated in c :(. U can see a very tough problem hardly has 50 solves during contests, but those above 200 are leaked by some mfs polluting the very spirit of this platform 
6 Likes
The third hour of contest is the most hazardous thing that can happen to a contest, I’m against 3 hour contests, I believe 2 hours should be standard time for every competitive programming contest.
3 Likes
For C, I got the logic but I was unable to code 