1.618034's blog

Cheaters solving up to E in last EDU ?
By 1.618034, 14 hours ago, In English

I saw many accounts recently skipped maybe 3 or more times and solved up to E last edu? Is that real ?

Please, put submissions for potential cheaters as I didn't have time to search.

As comments point E was both AI doable and leaked early, I found a suspicious account start contest by E! and skipped thrice recently on EPIC, 963, 964.

from 0 to 5. srour_. Also DeepanshuJindal30 and solving with 4 languages --> sabbirsajids45 creator_by_kamroncik cheater who cheated and solved E right after A lol. and the same cheaters code

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14 hours ago, # |
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THAT'S WHY MY PERFORMANCE DROPPED FROM 1900 TO 1800!

Edit: This person seems to have cheated by using multiple accounts: https://mirror.codeforces.com/contest/2004/submission/276660036 Compare this solution with their solution for A.

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    10 hours ago, # ^ |
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    creator_by_kamroncik one of cheaters, who solved up to E in yesterday's contest

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14 hours ago, # |
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yeah just read an excellent blog by pogog

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14 hours ago, # |
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problem E suspiciously had lots of correct submissions

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14 hours ago, # |
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E was available online afaik.

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    14 hours ago, # ^ |
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    E was AI doable

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      13 hours ago, # ^ |
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      Is that true?

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        12 hours ago, # ^ |
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        Ye, apparently it couldn't solve A but could solve E according to another one of my friends.

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          10 hours ago, # ^ |
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          I call bs, I highly doubt any AI can solve E (not because of its difficulty but because its solution is print grundy and find pattern)

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            10 hours ago, # ^ |
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            but like grundy is somewhat famous algorithm?

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              9 hours ago, # ^ |
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              I won't call it an algorithm and in that problem, you were supposed to kind of find a way to MEX things quickly (which seems observational to me and kind of non-standard).
              But maybe there is enough discussion on the topic (co-prime sort of nim) and AI had access to it. If you could try getting it from an AI like your friend said. Your argument will become more valid.

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                9 hours ago, # ^ |
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                He never specified which AI :)

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            62 minutes ago, # ^ |
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            I wasted an hour talking to ChatGPT, giving it hints. But it still can't find the solution.

            I had to do some "maaaaybe grundy works", "maayyyyybeee smallest prime factor".

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          24 minutes ago, # ^ |
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          A lot of the times you see AI-generated solutions they are just rewritten leaked solutions…

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14 hours ago, # |
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At any rate, E is easily googleable. I also googled it and spent a good 15-20 minutes revising the theorem before AC in virtual. Thus, it's actually hard to discern between cheating (if any) and googling for keys — code inspection should come in for conclusion.

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13 hours ago, # |
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Many cheaters are straight copying and pasting the code. cheatings will significantly reduce if these telegram channels are taken down.

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    9 hours ago, # ^ |
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    So many people downvoted my comment It's sad. Oh wait That was their cheating resource I exposed of-course they'd be troubled. Still cheaters deserve no success in anything, shame on their existence

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13 hours ago, # |
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and 4k solutions in D

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    12 hours ago, # ^ |
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    imo, D was easier than a regular D. But the # of AC solutions on E is kind of outrageous.

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11 hours ago, # |
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infact, up solved till F.

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11 hours ago, # |
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Support <3

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11 hours ago, # |
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keko

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    10 hours ago, # ^ |
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    Why this guy get +356 in a skipped contest?

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      10 hours ago, # ^ |
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      Don't worry, the rating will be updated maybe once time / week. All the round "skipped" will be removed and they got negative delta later.

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      10 hours ago, # ^ |
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      Ratings have not been rolled back and hence not recalculated

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9 hours ago, # |
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sabbirsajids45 solved problems in Ruby, Java, C, C++, and Kotlin.

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8 hours ago, # |
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I've tried to solve E by generate about 200 first grundy numbers and copy paste to OEIS. But can not find any solution.

Did I cheat in your opinion ?

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    8 hours ago, # ^ |
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    I think no, everything on OEIS is shared before the contest

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    8 hours ago, # ^ |
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    At least as common sense in Codeforces, googling and OEISing isn't cheating (though setters would usually try to prevent such methods to cheese a problem).

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6 hours ago, # |
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The 1st mentioned ID has been skipped so many times that I'm losing track of how many times it's been skipped while trying to count.

"There are countless bad cheaters in this community, but not a single bad skipped exists."

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6 hours ago, # |
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cheating has peaked in the current div2s and educational contest even most of the people from my institute are forming groups and using telegram to boost their ratings so that they can get a better placement i don't know if it has a direct correlation or not but ig it will improve once placement season is over.

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    5 hours ago, # ^ |
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    This is disgusting, They not gonna get a job doing this. They are "Once a cheater, always a cheater"

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5 hours ago, # |
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How are skipped solutions currently punished? Like in the screenshot above srour_ has 3 skipped contests dating back to 8/4 and he is still getting rating from them.

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    4 hours ago, # ^ |
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    i think rating roll back has to happen and then recalculation he will have 2 unrated, and 2 rated getting minus

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      4 hours ago, # ^ |
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      Why 2 unrated? Shouldn't he get punished for all 4 contests?

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