calari6400's blog

Alice and Bob found out way to escape Plagiarism ?
By calari6400, history, 3 years ago, In English

Alice and Bob are too smart so called coders.They have now figured out how to escape from Plagiarism. Mayank is struggling with with Plagiarism on codeforces now he wants to figure it out if his two friends Alice and Bob have applied the rule to avoid Plagiarism.

They can perform two type of operations.

  1. Change the variable names to any other lowercase Latin letters.

  2. Insert lot of commented code.

Sample test case:

Alice submission->link

Bob submission->link

Alice submission->link

Bob submission->link

Please Upvote if they followed the rule.

Note-I was wondering why the submission of same problem during contest of both players have not exceeded 10 minutes.

For more test cases open their respective profiles.

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  • +176
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Comments Comments (25)
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3 years ago, # |
  Vote: I like it +5 Vote: I do not like it

I had not expected this from Alice and Bob. ;)

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3 years ago, # |
  Vote: I like it +1 Vote: I do not like it

Why codeforces plagiarism checker haven't caught their code ??

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3 years ago, # |
  Vote: I like it -31 Vote: I do not like it

It's high Time to upgrade plagiarism mechanism. MikeMirzayanov, BC gandh macha rakhi hai codeforces par inhone

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    3 years ago, # ^ |
      Vote: I like it +27 Vote: I do not like it

    BC gandh macha rakhi hai codeforces par inhone

    Translation: Stop them otherwise I would get bald.

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3 years ago, # |
← Rev. 2   Vote: I like it +11 Vote: I do not like it

why all unrated came here to comment ? ohh F .. i am too unrated! btw nice way of writing about plagiarism .. still laughing :D

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3 years ago, # |
← Rev. 2   Vote: I like it +2 Vote: I do not like it

Operation 2 can also be "Insert useless code" (eg. 95885430, 120064716).

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3 years ago, # |
  Vote: I like it +30 Vote: I do not like it

It's quite interesting that the author of this blog made so many fake accounts to comment on this blog..

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    3 years ago, # ^ |
      Vote: I like it +1 Vote: I do not like it

    to make peace we need to use violent methods sometime, i guess you got ur answer :)

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      3 years ago, # ^ |
        Vote: I like it +6 Vote: I do not like it

      Feels so bad that you are liking your own comment from alt accounts...

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        3 years ago, # ^ |
          Vote: I like it +3 Vote: I do not like it

        Feels bad that you are still stuck at newbie due to these cheaters

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          3 years ago, # ^ |
            Vote: I like it +5 Vote: I do not like it

          Not because of cheaters... its just because I did so many blunders in my previous contests....

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3 years ago, # |
  Vote: I like it +8 Vote: I do not like it

This is too much. At least pay some respect for problems A and B. You can do that by yourself.

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    3 years ago, # ^ |
      Vote: I like it +14 Vote: I do not like it

    If people start to solve A, B by own then the telegram solution selling market would die. Cuz cheaters are only able to solve those 2 problems in contest :holyfuck:

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3 years ago, # |
  Vote: I like it +18 Vote: I do not like it

What else can be expected from the college of twoseven.All these people cheating doing cp for job and spoiling it for the others

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    3 years ago, # ^ |
    ← Rev. 2   Vote: I like it 0 Vote: I do not like it

    Why does it matter to you if someone cheats? And you don't have the guts to comment from ur main account. I wonder why.

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      3 years ago, # ^ |
      ← Rev. 2   Vote: I like it 0 Vote: I do not like it

      Well let's have a scenario you are playing your favorite game (CS GO) to relax. You queue into a match and start playing. The next thing you know someone is cheating and has spoiled at least that match for you. The cheater while cheating has wasted your time and due to this your interest in the game drops. Similar is the case with these cp cheaters.

      Edit: Just realized that the accused nitin_05 has changed his org name. What kind of morals does this person have . He has been accused and instead of removing his previous org name from account. He has put a new one in place , defaming the new org. My request to you nitin_05 , please remove the college name from yours codeforces id. If you want this to prevent people from getting to your linkedin ID just know that it's trash af and worth no one 's time.

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        3 years ago, # ^ |
          Vote: I like it 0 Vote: I do not like it

        Well, csgo is entirely different scenario cuz in that I am directly affected. In codefoces, it doesn't matter to me if anyone is cheating, since it doesn't affect me in any way.

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          3 years ago, # ^ |
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          Cheating affects each and every participant of a contest. Just read about how rating mechanism works and you will know.

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3 years ago, # |
  Vote: I like it -6 Vote: I do not like it

I find it very suspicious that an alternative account was able to randomly identify such an Alice and Bob. Do you all go to the same school or something? Can you please keep the drama to yourselves? Yes, the plagiarism checker is kind of outdated, but that doesn't give you the right to openly attack each other (when calari could have posted links to code snippets, or cropped out photos instead of the submissions themselves)

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    3 years ago, # ^ |
      Vote: I like it +2 Vote: I do not like it

    You seem to be one of those.
    1. No we don't go to same school.
    2. You can also keep this drama to yourself.
    3. who gave you the right to comment in this blog.
    And about alternate account, people from cheaters community keep on messaging wrong things and we can't report them.

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      3 years ago, # ^ |
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      obviously you did something that even computer can't do. But I was really wondering how a human can actually find out two exact same solution out of thousands contests and 1000s submissions. If we even do brute force it is quite hard for a human. themadprogramer's comment has point too.

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        3 years ago, # ^ |
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        But I was really wondering how a human can actually find out two exact same solution out of thousands contests and 1000s submissions.

        Just repeatedly picking random pairs of contestants and taking a look at their solutions will eventually lead to discovering a pair of suspected cheaters: https://en.wikipedia.org/wiki/Infinite_monkey_theorem

        I'm not surprised to see such cheater discovery blogs popping up from time to time. But the main problem is that this method of searching for cheaters doesn't scale and can't catch them all, while wasting an enormous amount of man hours. The only positive aspect is that the cheaters can never feel safe even after fooling the automated plagiarism checker.

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3 years ago, # |
  Vote: I like it 0 Vote: I do not like it

seems like they are gf & bf since solve function is renamed as oyoroom(). LOL

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