IHaveBeenToldWhatToDo's blog

Ladies and Gentlemen, Ideone adventures the next volume
By IHaveBeenToldWhatToDo, 6 years ago, In English

Hey, good to see you on today's show! We have very special guests exclusive for today's episode! They solved the problem D and their codes are pretty same! Yes, very exciting! This only happens from round to round. I'm honored to declare that beautiful list:

islammohsen — (https://mirror.codeforces.com/contest/1136/submission/51188835)

daffodildiku — (https://mirror.codeforces.com/contest/1136/submission/51193569)

sp4c3_c0wb0y — (https://mirror.codeforces.com/contest/1136/submission/51192594)

computerbox — (https://mirror.codeforces.com/contest/1136/submission/51192222)

basel-99 — (https://mirror.codeforces.com/contest/1136/submission/51192357)

sarthak1407 — (https://mirror.codeforces.com/contest/1136/submission/51192093)

dinesh_barri — (https://mirror.codeforces.com/contest/1136/submission/51192037)

viky007 — (https://mirror.codeforces.com/contest/1136/submission/51191810)

OneTeaspoonPlease — (https://mirror.codeforces.com/contest/1136/submission/51191769)

bijoy_00_ — (https://mirror.codeforces.com/contest/1136/submission/51191445)

naksh9619_ — (https://mirror.codeforces.com/contest/1136/submission/51191344)

That's it for this time! Of course, I apologize for others I couldn't invite today, next time for them :)

And, this codes are obviously same with pretty near submission times :) How exiting and enjoyable, so it is my pleasure to show that honor to our admins and coordinators! MikeMirzayanov KAN 300iq

Thanks for watching!

  • Vote: I like it
  • +124
  • Vote: I do not like it

»
6 years ago, # |
← Rev. 6   Vote: I like it 0 Vote: I do not like it

This happens when people use online compilers, such as Ideone and forget to put it on private mode. As a result some people might scan Ideone's history to steal solutions.

Edit: Solution for B could also be found in Ideone's history https://ideone.com/XUtiyb https://ideone.com/durimK

Solution for C posted at 18:52 CET https://ideone.com/hjDDJQ

→ Reply
»
6 years ago, # |
  Vote: I like it -11 Vote: I do not like it

MikeMirzayanov did you just changed something? I mean the system was used to disqualify the user from the contest and now it just skips the submissions and ratings are being updated. It would be great to change it in that way, but seems it didn't apply for everyone. What's new? :)

→ Reply
  • »
    »
    6 years ago, # ^ |
      Vote: I like it +16 Vote: I do not like it

    If that is true, I'd say it's better. Disqualifying the user from the contest means the user who cheated will not lose his rating, while skipping his/her submission will most likely do (since he/she can not get the points for a whole problem.)

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

Russians love to endure

→ Reply
»
6 years ago, # |
  Vote: I like it +7 Vote: I do not like it

why is my solution skipped? i didn't cheat and it's normal in a problem like this to many codes are similar the code is 40~50 lines of code so if we have the same idea the codes will be similar plus this is my style in writing you can check my codes.

→ Reply
  • »
    »
    6 years ago, # ^ |
      Vote: I like it +26 Vote: I do not like it

    MikeMirzayanov KAN 300iq

    → Reply
  • »
    »
    6 years ago, # ^ |
      Vote: I like it +34 Vote: I do not like it

    I was solving the problem on an locally on an ide. i didn't use an online compiler.

    → Reply
  • »
    »
    6 years ago, # ^ |
      Vote: I like it +34 Vote: I do not like it

    Look at the solutions for the problem many people wrote the some solution with similar code

    → Reply
    • »
      »
      »
      6 years ago, # ^ |
      ← Rev. 2   Vote: I like it +18 Vote: I do not like it

      a small example 51182192 this submission have the same idea and implementation of the previous codes and we can find many more similar codes. i think it's very hard to detect cheating in codes like this because the code is too short and uses only one for loop to calculate the answer how did the algorithm determine that my code is similar to other code and i never use online compilers so there is no chance that someone took my code. MikeMirzayanov

      → Reply
      • »
        »
        »
        »
        6 years ago, # ^ |
          Vote: I like it -7 Vote: I do not like it

        Try to make ur own template that makes ur code distinguishable from the rest

        → Reply
»
6 years ago, # |
  Vote: I like it +49 Vote: I do not like it

As I can see the first submission here is islammohsen's submission. If what you say is true then where is the ideone(or any other online editor) link of this code?

And if he exchanged the code directly with the other participants, is it possible to do that with 10 coders from different countries?

Additionally, I don't think that you have checked old submissions of these users (according to the time of posting this blog).

You should think carefully before you accuse someone.

→ Reply
»
6 years ago, # |
  Vote: I like it +14 Vote: I do not like it

I think that there is something wrong with plagiarism algorithm

→ Reply
»
6 years ago, # |
  Vote: I like it +27 Vote: I do not like it

"They solved the problem D and their codes are pretty same!"

Is that right? I have just checked the first few submissions. It seems that your blog might have just unfairly celebrated raising a false flag. Those who spent their time to solve this problem should not be penalized for coming up indepedently with the same idea and writing similar codes. The automated program for plagiarism detection should be reviewed seriously if the first few codes referred in this blog are claimed to be "pretty same!". Codeforces should not naively celebrate unfairness, and similar blogs that try to ruin the good reputation of innocent fellows and harm their professional career without concrete evidence that they violated the rules of the contest should be discouraged.

→ Reply
»
6 years ago, # |
  Vote: I like it +43 Vote: I do not like it

I briefly checked those codes and they seem different enough to me. Can you give some examples for clearly identical parts of code?

→ Reply
  • »
    »
    6 years ago, # ^ |
      Vote: I like it -20 Vote: I do not like it

    Different enough to avoid the detector.

    → Reply
    • »
      »
      »
      6 years ago, # ^ |
        Vote: I like it +47 Vote: I do not like it

      Different enough to avoid human detection as well.

      → Reply