CheaterKiller's blog

Some cheaters from #403. Cheater Report #4
By CheaterKiller, 8 years ago, In English

Hello Codeforces, I found some cheaters from Codeforces Round #403 (Div. 2, based on Technocup 2017 Finals). Lets see.

Firstly, cheaters are Jori and Panole23333333. Lets look their submission for problem B (A is easy problem, so most of users codes can look like each other). RealFan's submission and cwy1211's submission, names of most variables and algorithms are same. Ok, lets see submissions for C, RealFan's and cwy1211's, again, names of most variables are same and I have no idea why one of them changed name dfs to sc (what does sc mean?). Also some of them added this to code, but didn't use:

int QAQ=0;
	FOR(i,0,n-1) QAQ=max(QAQ,ans[i]);

Probably for not getting caught by system.

See their submissions for problem D, Realfan's and cwy1211's, again same kind of cheating but names of some variables are changed and one of them used const variable instead of 26... Shame on you Jori and Panole23333333! I hope you will not cheat again.

Probably I will update this entry and add more cheaters... Don't cheat!

Sorry for poor English.

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Comments Comments (10)
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8 years ago, # |
  Vote: I like it +24 Vote: I do not like it

Shame on you Realfan and cwy1211!

loud of laugh with this sentence. :D

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

    Is there problem with that sentence? As I noted in blog, my English is not good, if there are mistakes, sorry.

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8 years ago, # |
  Vote: I like it +16 Vote: I do not like it

But I can hardly see them cheating... The variable names and the template they used are widely used in China. And there are some obvious differences in their codes.

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    8 years ago, # ^ |
      Vote: I like it -9 Vote: I do not like it

    Look solutions again, they did exactly same things in same places.

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8 years ago, # |
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how do you catch cheaters

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    8 years ago, # ^ |
      Vote: I like it -17 Vote: I do not like it

    I hope you are not asking this so that you can find loopholes in his method and do your dirty work without getting caught. Just saying!! I hope you don't find this offensive;)

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

      Hello, I'm not a cheater and don't think to cheat on upcoming contests I just wonder what was his algorithm, how does he catch cheaters

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8 years ago, # |
  Vote: I like it +9 Vote: I do not like it

Hi Can u plz look into the submissions of http://mirror.codeforces.com/profile/cerebral_assassin http://mirror.codeforces.com/profile/heiisenbergg

These 2 have been cheating nearly in every contest.

For instance see this http://mirror.codeforces.com/contest/754/submission/23600319 http://mirror.codeforces.com/contest/754/submission/23599169

These 2 are nearly similar.U will find much more similar solutions in their profiles.

Plz expose them.U are doing a very good work

Thank You

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