Duy_e's blog

I was caught cheating with strangers
By Duy_e, 22 months ago, In English

This morning, I was notified about cheating-like behavior by Codeforces Bot, including two more people marshall990 and BinaryQueen2 who have the same submission for the problem 1706C - Qpwoeirut And The City. However, no information were provided to clarify who they actually are. Nevertheless, these are the submissions which has a lot of similarities to my code.

164781026 by BinaryQueen2

164792634 by marshall990

164753251 By me

I myself have had two evidences for this case:

  • I have submitted my code faster than them (please check for the submission time)

  • They resubmitted their answers from time to time, including changing the data type and algorithm sequel. This still have some traces of my code, and you can easily notice those once you open and compare my code with their code.

It can be concluded that my code has been copied, reordered the sequel and made changes to the data type. I hope Codeforces administrators will remove this as a result of false positive detection.

[Quick update]

I found that, the earlier submissions of those two users were the same code as many skipped submission in this problem. And that code was the different idea from mine. This prove that those guys are trying to cheat.

[Another update]

The guy who copied my code has comfirmed. Thanks for your comfirmation!!!

  • Vote: I like it
  • +75
  • Vote: I do not like it

Comments Comments (30)
| Write comment?
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by Duy_e (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by Duy_e (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by Duy_e (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by Duy_e (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it +3 Vote: I do not like it

sadly:(

→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by Duy_e (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by Duy_e (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

May God be with you!

→ Reply
  • »
    »
    22 months ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    thanks alot, I didn't see the cmt :<

    → Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by Duy_e (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by Duy_e (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by Duy_e (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by Duy_e (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it +35 Vote: I do not like it

The only reason i could think of why my code is being leak is because of the hacking system. When someone create another account and get pass in pretest, then they go to the hacking room to see other solution.

→ Reply
  • »
    »
    22 months ago, # ^ |
    ← Rev. 2   Vote: I like it 0 Vote: I do not like it

    If that is the case, I think they should have passed that problem already ? Why would they go to hacking room to see other solutions ?

    → Reply
    • »
      »
      »
      22 months ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      Actually they have copied another code before mine, and those code are really similar to a lot of skipped code in the status. So there maybe someone got AC by that submission and trying to overcome the checker by copy another code.

      → Reply
      • »
        »
        »
        »
        22 months ago, # ^ |
          Vote: I like it 0 Vote: I do not like it

        Woa, if it is true, isn't Codeforces score-type contest is flawed ?

        → Reply
        • »
          »
          »
          »
          »
          22 months ago, # ^ |
            Vote: I like it 0 Vote: I do not like it

          I think CF do its job really well. It's just because of the people who take rating so seriouslly and do every for their rating, even cheat.

          → Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Did you write and debug your code locally or use an online compiler? If so, it's possible that the online compiler leak your code.

→ Reply
»
22 months ago, # |
  Vote: I like it +39 Vote: I do not like it

Downvote me but, in my opinion plag checker is unable to catch the actual person who cheats. There has been cases of false plag with 2 of my friends too. I asked them to write blog, but they were newbie and nobody trusted and downvoted him heavily.

One of the main reason for cheating is resume. Its placement season in India now. I know people who cheat but they are not caught because they modify the code so much that even author cannot recognize that its his code.

→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

nice click bait title name

→ Reply
  • »
    »
    22 months ago, # ^ |
      Vote: I like it +9 Vote: I do not like it

    I've noticed it. It really look like some nsfw title : D

    → Reply
»
22 months ago, # |
  Vote: I like it -14 Vote: I do not like it

So you created an alt account just to prove that you're innocent? If not so, then how is that you were able to identify that user as a 'guy' and not a 'girl'. Probably a tactic to divert everyone's attention and put the blame on someone else? Plus your profile has a lot of skipped solutions apart from the ones in previous contest. Do you have any funny reasons to justify those as well? And what's the point behind using all caps title for the blog? The word stranger makes it even more suspicious. My guess is you know personally you're taking your personal vengeance here. *_*

→ Reply
  • »
    »
    22 months ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    lol what a hilarious deduction

    → Reply
  • »
    »
    22 months ago, # ^ |
    ← Rev. 2   Vote: I like it +3 Vote: I do not like it

    Those skipped solution i got from the past was before I got to 1700. And my solution also at the second page in the status among all the skipped, this can prove that i'm able to solve this problem. About that account texted me, i don't know who it was, but at least that's not my alt. And if that person and I were friend, what could i get when posting this blog? I might get nothing but alot of hate from my friend.

    → Reply
»
22 months ago, # |
← Rev. 2   Vote: I like it +84 Vote: I do not like it

I WAS CAUGHT CHEATING WITH STRANGERS

Wow at the first glance I really thought it was a P*rnhub video...

→ Reply
»
22 months ago, # |
  Vote: I like it -8 Vote: I do not like it

It seems you've a fair case. I hope your submissions are back accepted, but actually the blog's title is Hilarious!! ""D Try putting better titles..

→ Reply