With the help of some experienced and respected members of the community (thanks!) there was formulated a rule that allows a third party code to be used under certain conditions. Please read carefully the text.
The following text will go as part of a renewed competition rules. The closest contest will be held already on the updated rules. Thus, there are about two days for further details, if something is unclear.
Solutions and test generators can only use source code completely written by you, with the following two exceptions:
- the code was written and published/distributed before the start of the round,
- the code is generated using tools that were written and published/distributed before the start of the round.
Any usage of third-party code should not violate the right holder’s license or copyright. Remember that published code is not always free to use! At the request of the right holder, any code that violates the license or copyright may be considered as violating the rules.
All the changes in the code from exceptions 1) and/or 2) must be made solely by you.
If there are any doubts about the time of publication, possible collaboration etc., a participant will have to prove his/her complete innocence by presenting compelling and satisfactory evidence.
Currently, the only reliable proof is the presence of code on the Internet and the presence of the used edition in the cache of well-known search engines.
For example, this rule accepts the use of the code from the website http://e-maxx.ru/ if the code was written and published/distributed before the start of the round. With the help of search engine caches, it can be easily shown that such code doesn't violate the rules. Similarly, it is permissible to use the code from a book/article that was published before the contest. On the other hand, using team reference code (for example, prepared for ACM-ICPC World Finals) is not allowed if there is no reliable and objective way to prove that the code was written before the contest.
This rule doesn't loosen the rules about prohibiting of communication, discussion, or any other form of communication between the contestants on any topics about the problems during the round.
Sorry if this is already answered in the text above, I'm not quite sure.
In a number of contest websites (including TopCoder and here on Codeforces), after a contest finishes, the source code for each submission is viewable by any member. Is this considered "published/distributed" code? (e.g. does this rule mean that all contestants can use past submissions of every other contestant?)
Same question for code snippets published on codeforces.com/blog/
Generally speaking, no, authors do not have obligation to release their code into public domain, they only provide unexclusive license for TopCoder
Same thing
same I am sorry
.
same
Same Thing
Same Thing
+
+
same
Same thing happened to me.
Same
Sorry but it was a coincidence .. I published my code on ideone.com that's why the problem has occured. Please give my ratings back
__Prophet___ Could you please explain what your issue was?
I think i have used ideone in public mode by mistake because i dont have idea that someone can see my solution there thats why my solution has been copied by somebody.
Same here bro , I also used ideone on default setting by mistake, what's the solution?
I tried running my code on ideone in default setting and someone copied my code and I was not aware about that.
Same happened with me.
same also happened with me.
Same happened with me too
Same thing brother
Same
Same thing happened.
Same
...
..
.
..... khk
I used Ideone as well and will never do this from next time.i did not knew it was default by public
I use ideone. I was not aware of this. Please don't block me or give penalty as I donot know about this.
I used Ideone as well and wasn't aware about the rules, I request you to not block me or give me any penalties. I apologize for my mistake.
I used Ideone as well and wasn't aware about the rules, I request you to not block me or give me any penalties. I apologize for my mistake.
same
Same
For me yes same thing happened.
The same happened with me i was writing the code in ideone and i wasn't aware it was in public mode. I apologize for my mistake and will never do again.
same happened to me
Same with me,I'm sorry
Same
same happened to me, wasn't aware, it was my 3rd contest, did not know about this. won't be repeated and i'll be mindful.
The same thing happened to me, I didn't knew about this things. Thanks for informing I will check this thing does not happen again. I am Sorry.
same
same
Same even i didnt know ideone was public by default which led to the problem. I am sorry
The same happened with me i was writing the code in ideone and i wasn't aware it was in public mode. I apologize for my mistake and will never do it again as it was my initial contest i was unaware about it sorry i will repeat this mistake
The same happened with me i was writing the code in ideone and i wasn't aware it was in public mode. I apologize for my mistake and will never do again.
The same happened with me i was writing the code in ideone and i wasn't aware it was in public mode. I apologize for my mistake and will never do again.
Sorry, it was my mistake that I use Ideone, actually I was not aware about the rules, please do not block my account.
same happened with me
that happened to me twice before realizing that I was holding myself down by using Ideone in the first place
how much rating was deducted for this?
none but they rolled back my rating change and warned me that a third strike might get me panned
The same happened with me as well I was writing my code using ideone.com in public mode didn't know this would happen. I am sorry for what happened in this contest. Now onwards going to use sublime!
l
Same with me,I don't have idea that someone can see my solution on ide during contest, that's why i recieved a msg that your solution is colloide with others. I will take care from next time
Same happened with me, but I still got a "skipped".
Bro..what did you do after got a "skipped"? Same thing happened for me and I cannot register in upcoming Div2..please help me
same happened with me to i didn't know there were sites like these
Same thing happened to me in the contest. I usually code in sublime but on that day it was having issues, it was popping the Buy Sublime box again and again. So I decided to use ideone and forgot to switch the settings in a rush. This is the first time for me I had no idea about it, I will make sure it won't happen again. Please don't put any penalty this time, as it was unintentional.
Same happened with me, please give my ratings back.
I would highly recommend you take a look at everyone else's requests before posting you're own. IDEONE isn't affiliated with Codeforces. You won't get rating this round, keep that in mind for next round, and keep your ide's as private!
Same here, I used ideone.com so I done this mistake. Next time, I will take care. Please didn't reduce the rating. These ratings are very precious to me.
Same happened with me, I was using ideone for my few last contests, I did not knew that someone else can see my code from there, I am really sorry for this mistake. I will take care of this from next, please don't give me any penalties or block my account, I was unaware of this.
Thank you in advance!
same and i got skipped
i was also using online compiler.
same i too got skipped
Same, I apologize for this mistake. I'll be more careful in the future. I wasn't aware of the rule, so I hope you can avoid any penalties or blocking my account.
Same I also Got Skipped in a recent Div 2 Contest. I will take care of these mistakes I hope it doesn't give me a penalty or block.
Sorry but it was a coincidence. I was using ideone.com and wasn't aware that it is in public mode. Will never repeat this mistake. Sorry for that.
same issue
I was using online compiler and the same thing happened to me and I wasn't know that it's illegal I request to don't block me of my div 2
A
same
I was using ideone for my few last contests, I did not knew that someone else can see my code from there, I am really sorry for this mistake. I will take care of this from next, please don't give me any penalties or block my account, I was unaware of this.
Thank you in advance!
Same issue
same
The same happened with me
Same happened in my case!!!
SAME THING
The exact same thing happened with me.Pls forgive me i wont repeat it again
same for me too
Same happened with me
same
same also happened with me.
same here and I wasn't aware of this at all, kindly give my ratings back.
Aur Karo Cheating Aesa hi Hona Chaiye tumhe kya lagta hai harr jagah Choot quota Lag jaega :) :) :)
shrm haya naam ki chizz hai apni jubaan smbhaal kr rkho aur jrra tmeez seekh kr aao pehle dusro ke comments mein hgne se accha
kis bat ka saram, chhori karne se pahle tumhe saram aai?agar aai hoti saram to chori nhi ki hoti or yaha rr nhi kar rhi hoti. and choot quota hi hai jo tumlog zomato,lawda lassan...pta nhi kitne company me shortlist ho jate,or rahi bat jubaan sambhalne ki,to choot qouta ko choot qouta hi bolenge,bcoz usi ke basis pe tum sb ka selection hota hai,so accept the fact
oo madam aukat mein reh kr baat krle aayi smjh mein 20 min mein nipta kr aayi thi zomato ka test nhi pta hota na to dusro ke comment section mein jaakr hgte nhi hai
questions kya the? print "Hello World" 3 times ??
same
Same thing happened or me also
I didn't know code written on ideone was public by default. I'll be careful next time.
same with me? lol
same thing
Same thing happened with me in the last contest. I wasn't aware that this was even possible!!
I tried running my code on ideone in default setting and someone copied my code and I was not aware about that.
I had used Programiz to compile my code and run the test cases on the internet, since my vscode was giving issues. Please look into it, I didn't know the code could be retrieved from there.
The same thing also happened with me.They did not even change the author name!!
Its time to shift from ideone to sublime text XD
I have two acout,and this time I use the first acount to take part in the contest,but My cf tool is linked to the other acount, so i submitted the same code. What can I do now.
Realize that your lie is so terrible that you should take acting lessons
Having two accounts already violates codeforces rules
I forgot to disable public mode so sorry about that.
Same here
same
I am sorry as well.I didn't knew someone could see my solution
Same here as well, eversonce that happened i have stopped using ideone.com
.
Same happened with me and I apologize for that. I used ideone in public mode and someone copied my solution .I was unaware about it.
+
Same thing occured
Hey Same thing, I use to give my contest from my college lab as I live in hostel, and our college use shared lan on every linux machine which we use. We irrespective of our years sit in CP, but one thing for sure I don't cheat. Please don't penalise me for the sin I did'nt commit
Same thing happened to me
.
.
Same thing happened to me I guess I am sorry' though
I think I have made the same mistake and used Ideone in public mode without knowing someone can copy and refer to my code, I will take care of it next time and will either use it in private mode or shift to local. As a penalty you can retract my rating change for this contest, It will serve as a reminder of my mistake. I promise to make sure, this doesn't happen in the future
same
Same Thing
Sorry, but same thing happened. Writing on ideone on public mode was the cause. I would avoid using it from the next time
same.1994C submission of mine was in public mode.Also i have different approaches for the same question. Sorry for the unseen mode .
not only ideone,,, I got a mail surprisingly after yesterday's contest. I frequently used ideone, replit, coderpad, jdoodle yesterday and also these days. I never thought someone will hunt like this. Also I did a mistake that, whatever program I tested there was with a headline plus my macros with codeforces round name( I just tested from sublime to online IDEs). Just checked the mail and quick reveres engineered with the usernames given. Found telegram ids, channels with the same names. They provided the same solution(though they tried to change a little bit and maybe quick ChatGPTd). So it's a lesson plus warning for all whoever using ONLINE IDEs, please just don't use it without proper settings. And also sometimes, answer to some questions(specific), already available on the internet(the methods, solutions), it can also flag the submission as copied.
Same things happens to me
Same happened with me.i wasn't aware it was in public mode
same
As for rechecking, I am not clear. I have not referenced the code on any platform, nor have I submitted the code on any platform except CodeForces. Please restore my score.
someone cheated my code and he is skipped but I lost 200 scores, why ?????????????????? please give my scores back
it's so pity that this happened.I think it's a very coincidental thing, because this idea was brought up by my senior and me in class before. Please give my ratings back
I usually code on sublime but at Codeforces Round 963 (Div. 2). I didnt have my laptop so I used my sisters laptop to code on ideone.com since she didn't have the sublime setup on her computer. I had no clue about its public visibility. Please, give my ratings back this is not fair I worked hard for this and you guys are taking it away from me. That's not fair!!!
I am very sorry for the mistake I have made please return my ID it would be good for me
Same things happened to me.
I published my code on ideone.com & that's why the main reason it has been happened & please resolve that, in upcoming contest I wil not use these type of platforms.
Do I understand it right? Presence in cache of well-known search engines is mandatory for a proof to be considered reliable, isn't it?
What about the Wayback Machine (archive.org)?
Is it reliable enough?
It is not polite
(and does not serve well to the community)
to downvote a comment without any useful reply.
As we can see, anonymity of the voting system encourages coward and irresponsible behaviour of the voters.
What exactly is cowardly about downvoting you?
Downvoting with explanation is supportive and responsible
(but yes, it is risky because your explanation comment can be downvoted itself).
Downvoting with no useful explanation is just harming another person's contribution score without taking any responsibility or risks for that.
That's why I call the latter behaviour coward and irresponsible.
Okay so this is just arguing for the sake of it, but...
Then why not to explain the reason of downvoting in a couple of words?
Otherwise, how an author (of a downvoted message) is expected to learn what exactly is "wrong, offensive or [inappropriate]" about his/her comments and why it is considered wrong?
(I think the practice of explained downvotes would significantly decrease the total number of "wrong, offensive or just plain garbage" comments because their authors had a chance to learn community rules faster: what is considered bad in this specific community, and why.)
I understand that there are obvious cases (such as offensive comments) where explanation is not needed. But in this specific case it was not obvious (and it is still not obvious). Not for me, at least.
I completely agree with you bro.
It's often the case that some very genuine comments get downvoted suprisingly. Even some contest announcements get so many downvotes. Do you think those announcements are wrong, offensive or just plain garbage?
Stackoverflow tried to solve this problem by removing 1 point from your reputation when you downvote something.
(A bit more detailed answer. Back to the original issue.)
A bad thing -- as I see it -- is that I was left alone with my downvoted comment and without important information.
Specifically, I still have no idea why the original comment was downvoted.
I do not have information, neither about what exactly was bad about that my comment, nor about who downvoted it (so that I could ask them personally).
How should I learn from my mistakes in such situation if I do not understand what exactly my mistake was?
In my opinion, sharing information which allows other members to learn is a crucial thing for a community.
I was also very confused by your comment downvotes, i undestand the way you fell, and really appreciatte the fact that you are not giving up and blaiming youself. People downvote maybe just to feel better and harm others, idk.I see many guys explaining their solution to problems that are not in editorial and require some advanced knowldge getting downvoted. That's the way things are, nothing to do about that. MAYBE I WILL GET DOWNVOTED TOO,tring to keep your side.
Hahahaaa XD
Solution to problem Codeforces round 447 Div.2 question A. QAQ was already available on the internet, well before the contest.Please visit source — http://www.geeksforgeeks.org/find-number-times-string-occurs-given-string/ to confirm. Hence I don't think people should be penalised if their code matches with someone...as they both referred the same source....codeforces please see into it !
delete2, coutinho, OutSpace, blindspot — this is 4 photo machines. You will can’t better, lol
Hello Everyone, This morning I got a message from system that my submission http://codeforces.net/contest/911/submission/33725640 during the Educational Codeforces Round 35, has been found significantly similar to http://codeforces.net/contest/911/submission/33725051 and my account my get blocked due to this.
Both of the submissions were made my me for Question C, and i was thinking that the earlier one would be ignored as we have in any normal Round.
I request the community to help me out here as I don't know whom should I contact about this.
For sure it is a technical mistake and it will be fixed today. Sorry about it.
...And Happy New Year!
Thanks a ton for everything sir :)
Dear Codeforces, @MikeMirzayanov I got one message that I got plagiarised solution for 1986E. I used a public website to write the program. At max that solution or that contest should be unrated for me but it should not decrease my rating by so much. Please take a look into it, I think there should be any problem in this. This rating is very important to me.
:(
I also made such stupid mistake. Sure, it is so awkward.
zhongyin is my other account.I wasn't aware of the rules. So I submitted same code in both accounts in Codeforces Round #459 (Div. 2) contest. I am really sorry for my actions.
zhongyin is my other account.I wasn't aware of the rules. So I submitted same code in both accounts in Codeforces Round #459 (Div. 2) contest. I am really sorry for my actions.
Please clarify the message that is sent to users. I don't know where to "write a comment to post about the round with all the details". If this is the right place, please re-evaluate my solution for contest 919. The system claims neutron-byte/34741180 is similar to czommerfelds/34745389. The solution is very simple so it is no surprise it would be similar. Also the first result on Google for "c++ sum of digits" yields the same function http://www.sanfoundry.com/cpp-program-display-sum-of-digits/. Thank you. Best, Christian
hello codeforces, i had a message after Educational Codeforces Round 37(Rated for Div. 2) .which says that Your solution 34846770 for the problem 920A significantly coincides with solutions oneplus3/34846646, codinghunter/34846770 .i want to say that both of the accounts(oneplus3 and codinghunter) were mine and i don't know the rules of submissions . But i promise that the soutions of both accounts is completely mine, and i won't make this mistake again.Don't block my accounts
"Attention!
Your solution 35396581 for the problem 939A significantly coincides with solutions Mushfikur_Rahman/35392093, RezaSi/35396581. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties."
i dont know him and not published my code any where :/ ... that's simple problem and may be many user have same solution for A problem in contest :/
I received a message from CodeForces after round# 464 that my solutions for A,B and D have been plagiarised. The solution to D was DSU and code was available on HackerEarth link for D's code. Problems A and B were trivial, I think because of similar template the solutions have been caught. The template which I use is really common. The codes for A and B were of <10 lines and hence the similarity. Kindly look into the matter.The variable names which I use are really common amongst the programmers hence the similarity.
Hi Mr.Mike! I'm Amir and today i passed the contest with my submissions but your system and your employees i don't know, said that i submit a copy code for my self. i have a question: If i have two different accounts and i want to participate in both of them, i can't do this?!?!
I'll thank you if answer my questions, rapidly! Thanks again!
Having more than one account is prohibited by the rules AFAIK.
i just wanna to ask if 2 accounts belong to 1 person and he did the contest with 2 accounts at the same time. Is it violation?
I dont know the rules of CF.And the other account is mine too.I submit my code on my account and i submit it with this account. Whatever,i am sorry for this thing happened.
Attention!
Your solution 36167133 for the problem 948A significantly coincides with solutions avyaktg98/36161438, kogorou/36167133. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties.
This is a brute force solution and there was a similar problem "Palindromic Supersequence". Also if the members of the same team gets the same solution I recommend giving time to the involved participants to make changes in their code as the solutions are constructed while sitting in the same room. This type of instance is highly regretted and will be careful for the next time.
The solutions are not similar, they are completely the same. No one can believe in such coincidences.
Nice memes
36178861 36178839
same code + same compiler
That's because of Undefined Behaviour. You should erase by iterator, not by value (because in multiset you will delete all such values and iterator
itercan become invalid)Thank you for clarification
Attention!
Your solution 37167311 for the problem 962E significantly coincides with solutions cuom0405/37165015, flibia/37167311, anno/37167796, pepi_angelov/37167900. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties.
I used the official solution written in the Goodbye 2017 Editorial: https://www.dropbox.com/sh/i9cxj44tvv5pqvn/AAB1_2Q0XKvKiOA1ukvcNIuUa/F?dl=0&preview=F.cpp
Solutions and test generators can only use source code completely written by you, with the following two exceptions:
the code was written and published/distributed before the start of the round, the code is generated using tools that were written and published/distributed before the start of the round.
I used a code that was written and published / distributed before the start of the round.
The exact same thing happened with me !!
I copied Petr's code, I thought it would be better than the editorial anyway xD
This is my submission:
http://codeforces.net/contest/962/submission/37169973
This is Petr's submission on the problem from Goodbye 2017 round:
http://codeforces.net/contest/908/submission/33777962
This code was written before the start of the round. Apparently someone else copied the same code and I was charged with it being a violation?? I don't think that's fair.
I just saw that somebody else has written about our common problem, tell me if something changes for you.
Sorry, for being irresponsible. Yesterday in the "Educational Codeforces Round 42 (Rated for Div. 2)" I unintentionally used ideone as my system compiler wasn't working fine.I forgot to change the visiblity settings of ideone and someone intentionally misused my code. I would take care in future to not repeat this. my ideone code link during the contest is https://ideone.com/8vObjQ I saw the users profile with whom my code coincided(as said by you) ,his every solutions had been skipped which means he has a habit of copying. So i am innocent.
Attention! Your solution 37167900 for the problem 962E significantly coincides with solutions cuom0405/37165015, flibia/37167311, anno/37167796, pepi_angelov/37167900. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found athttp://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties.
This is the problem I used as my source (and probably the others): http://codeforces.net/contest/908/problem/F 962E is just the same problem as 908F.
https://www.dropbox.com/sh/i9cxj44tvv5pqvn/AAB1_2Q0XKvKiOA1ukvcNIuUa/F?dl=0&preview=F.cpp And this is the source code
FOR EDUCATIONAL ROUND: 42 ( The latest one)
I received a mail about violating the rules of the contest, by copying the code. But I have conclusive evidence that I had taken the code from a AC code of another problem, 908F. If u want I can link the solution here, from which I took the code. However, it was present BEFORE this contest began. So I am not sure how this can be a violation of the rules. It's the setters fault that the problem was exactly the same.
My solution : http://codeforces.net/contest/962/submission/37168611 The code I took it from: http://codeforces.net/contest/908/submission/33800403
I too had a AC code to this problem:908F (http://codeforces.net/contest/908/submission/33824171) But that got some error, so I decided to take another code.
Please nullify the claim that I collaborated with someone else during the contest. It is pure coincidence that they took the same code.
great rules ...
Sorry, I don't know the code can't be discussed, this is the result I discussed with him.
My solution 38295464 for the problem 984D significantly coincides with solutions yqdjl4/38292975, xiaowuga/38295464. I think the idea of this problem is relatively simple, the code is short, the possibility of the code similar is very great, I see the idea of the code is almost the same, this question is I think independently, I hope to restore my ranking,
This question is not difficult, It doesn't need any algorithm. This problem needs to be preprocessed.I do not have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition.But I stayed up all night playing this game and seriously ponder every question. I don't want to be skipped this contest.please!!!!!
hello.. I just got the message.. Attention!
Your solution 38659699 for the problem 981A significantly coincides with solutions i_wanna_work_at_google/38659167, tushar_2658/38659699. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties.
I dont know this guy.. maybe the solutions coincided.. requesting for a recheck.. and I didnt get any solutions from any source or other stuffs
Solutions are the same. By default some online IDE (like Ideone.com) publish codes. BTW I find it extremely weird or even dangerous. Be careful with them. Also prefer to use HTTPS in future and change passwords. Good luck.
Attention!
Your solution 39380288 for the problem 992C significantly coincides with solutions stonejjun03/39379338, ahgus89/39380230, stonejjun/39380288. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties.
I made this code before starting the contest https://www.acmicpc.net/source/8705303 and lots of people could see and also I shared with lots of friends already. When I write code in upper site. So I think the the part that in the site of code is same... So could you help me about it????
Attention!
Your solution 39628420 for the problem 996D significantly coincides with solutions sharpowl_06/39627670, sureshupadhyay900/39628420. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties.
i always prefer ideone for code ... and this is my code https://ideone.com/n0UjCL community please look at this and help me
Sorry I unintentionally used ideone.com for writing code and someone must have used it to see my solution. This won't happen later.
Hello, I recieved the following email from codeforces: Attention!
Your solution 40443772 for the problem 1006D significantly coincides with solutions vbbvaddd79506/40443608, Bogey24/40443772. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties.
Sorry for being irresponsible. In 'Codeforces Round #498 (Div. 3)', I used Ideone Online Compiler and forgot to change the default settings to private access. My ideone link during the contest is — https://ideone.com/BcjYgN. My code was used by someone else intentionally. I also saw the user's profile and observed that his submissions in past few contests have also been skipped. Maybe he had copied other user's solutions as well. Also I submitted my solution for the problem 1006D before this person. I am innocent and would take care in future not to use ideone during live contest.
As you pasted, "unintentional leakage is also a violation", so you aren't innocent according to the rules. Pay more attention next time and move on.
if me and my friend participated at the same time together consulting and solvong the problem together and due to that our code matches and this is our first time participating any contest so we didn't actually know the rules well. what can we do now?
Hi Codeforces, yesterday i participated on Codeforces Round #503 and I managed to solve 3 problems.
Unfortunately this morning when I woke up to check the results, i received a message from the system saying that this two submission 41488655 and 41489033 are the same.
I cannot deny that they look exactly alike. But when i did the third problem my IDE (CodeBlocks crushed) and i was forced to use ideone.com (link to ideone code, made 15 hours ago) to compile my code, and probably the other guy took it from there because I don't have any idea how else could he got my code. I didn't know that others can view your solution when using ideone. :( I will never use ideone again during a contest.
Now i don't have any idea how to prove myself as being the author of the problem. But i will try at least, maybe i can still keep my codeforces account. You can see for sure that the other guy copy pasted the problem. The first two problems do not match mine at all. And when you look at his submissions you can see a lot of them for problem C and the difference between last two 41488455 and 41488655 is just one minute and I don't see any way he could come with a totally different solution in just one minute. The submission are completely different.
And if i was using two accounts, do you think I would have wasted time coding two different solutions for the first two problems? Also you can see that the other guy, does this not for the first time, at the last Educational round he did the same. (image proving this).
I hope this can prove my point, have a nice day and thank you for reading, at least I shared my anger with you.
[Edit] Now it seems that i don't have access to any submissions. :(
As it is written in the message: unintentional leakage is also a violation. Please, be careful in the future.
I received a mail just now regarding the solution for problem 2014D significantly coincides with many other solutions! MikeMirzayanov Sir and Admins please look carefully as my code has been constructed completely in a different manner! Few part might be similar but I would like to put this clear Sir that neither I used any online complier nor I used GPT to search the solution for the problem, please recheck once so that you can also understand my point! I always adhere to codeforces rules while participating in the contest!
Attention!
Your solution 282359568 for the problem 2014D significantly coincides with solutions Uarenigger/282344750, vasuobx33/282345261, bobcode/282345304, 22R01A6694/282345641, hemantg3134/282345733, Vishwajeetkaran/282359218, WhyOnlyme1/282359440, MamkinNagibator228/282359450, R_V_REVAMTH/282359538, gateway_1916/282359568, musa10th/282359644, training_mug_1/282359946, lokesh.ranjan/282359969, devil328/282360054, bhai_coding/282360127, canttouchthis/282360324, Kaizoko_u_Ni_Ore_Wa_Naru/282360441, amandhananjay/282360442, SouvikJana/282360447, ab151515/282360670, akash9518/282360744, bog2107/282360912, nadeem_br/282361437, aort29/282361493, gafurov_sadi/282361536, HellobuddyJr/282361952 ashcodes24x7/282368786, JFS12/282368957, pdg2002/282370601, nilay../282370684, Its_R_I_K_19/282370911. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. In case of repeated violations, your account may be blocked.
Hi, Yesteday in the contest "Educational Codeforces Round 49 (Rated for Div. 2)" I maneged to solve 3 questions out of 7 among which 1 was hacked. But suddenly today i got a message from your team that one of my solution match with some other user. Actually yesterday i used ideone with the privacy public by mistake. I think my solution might be leaked due to that problem. Sir/Madam, I am wrongly penalized as that was done unintentionally but i make you sure that mistake will not be done next time. Kindly look into this matter and remove my penalization for the same contest.
As it is written in the message: unintentional leakage is also a violation. Please, be careful in the future.
Hi today I have got this massage "Your solution 41863084 for the problem 1025B significantly coincides with solutions stormraider/41847161, travelers/41863084." We both have used same code from geeksforgeeks here. But I think it is not a problem but if it is I will be careful in future thank you. Also can you pls look into the situation and remove my penalty for the same contest thank you.
Your solution 41835543 for the problem 1025A significantly coincides with solutions ak07/41833884, sourav54/41835543. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. I have not used ideone. I have taken some kind of help from some random sit e through Google search. I have no idea about this consequences. Plaese help. Thank you. Kindly look into this matter.
I got the message "Your solution 41863523 for the problem 1025F significantly coincides with solutions fateice/41858912, WAAutoMaton/41863523, zhang9302002/41864602, BLeavesCoder/41864866."
We used the same public code .It was published on 6/29/2016 and google cached the page no later than 8/7/2018. So I thought that it's allowed by "the code was written and published/distributed before the start of the round".
Please help me,thanks.
I have resieved the message that "Your solution 41864920 for the problem 1025F significantly coincides with solutions xzm2001/41862009, cubercsl/41864920." The problem is almost same to BZOJ4246 and we may use the same public solution and code. Please help me,thanks.Cache
"Your solution 42051437 for the problem 1029A significantly coincides with solutions DPO_WS/42050146, minhkhoi1026/42051437. Such a coincidence is a clear rules violation." I and my friend participated at the same time together and solving the problem together and due to that our code matches and we didn't actually know the rules well. I and my friend (http://codeforces.net/profile/DPO_WS) are very sorry about this, we won't do that anymore. Hope you can forgive us. Sorry if my English is bad.
"Your solution 42030924 for the problem 1029B significantly coincides with solutions AzusaMiooo/42030143, Isshiki_yen/42030924. Such a coincidence is a clear rules violation." I and my friend AzusaMiooo solving the problem together and due to that our code matches and we didn't know the rules well. I am very sorry about this. Hope you can forgive me.
I found the problem in the compilation environment three minutes before the competition, so I used ideone. I was not used to ideone, compiled without turning off the searchable option, and was excluded this round. I am aware of my mistake. Sorry. This may be insufficient evidence, but since most of my code so far has been written on the same template, I can show that the header, type definition, and variable declaration are exactly the same.
My source code of last round http://codeforces.net/contest/1025/submission/41833456 http://codeforces.net/contest/1023/submission/41750569
Copied source code http://codeforces.net/contest/1028/submission/42159376 http://codeforces.net/contest/1028/submission/42159445 http://codeforces.net/contest/1028/submission/42179991 http://codeforces.net/contest/1028/submission/42163628
I will pay great attention to the use of ideone in the future. May I ask you for a favor in this round?
y creI created a different Id for myself to use .I am sorry that I used both IDs during contest .I didnt cheat nor copied code of someone else.
Hi,
This is regarding Round 511 Div 2. My submission, abhisheksince97/43197368 has been flagged for coinciding with solutions vbbvaddd79506/43196786, priyasen54/43197486, fibo1/43201480, gennadykorotkevichaz/43202067, cpp19/43202087, milanmas/43202887.
I can prove that the solution is mine and the others have copied it. You can open all my recent past submissions, I have used the same template for .cpp file as I have done in this one. The rest have clearly copied.
Also, the solution that I have written is available on geeksforgeeks (https://www.geeksforgeeks.org/largest-subsequence-gcd-greater-1/). This could also be the reason for the match.
I was really foolish and naive to have tested my code on ideone. Please verify that I am the true author of this solution and please let this contest be rated for me as I put a lot of effort into it. I have never done such a mistake before and wont do it ever again.
Hi, This is regarding solution 43335491 for the problem 1058D - Vasya and Triangle , I have solved this question on my own ......I also matched my solution with 43330317 yes we have same variables declared due to which this misunderstanding took place ....but as you can see there is a lot difference in my templates and him....which I always use. This is just a coincindence and I am Innocent. Kindly consider my submission and do not block my account Thank you.
Yesterday, the two IDs, huangzhengdoc and hz2016 were my IDs, because CodeForces could not be found in some places in China, so I chose a domestic agent, but when I submitted last night, my two accounts have been switching because The proxy IP is the same, I can't choose, so both accounts are submitted, but after the game, I sent an email to the contest author's email address [email protected], asking him to help me solve this problem and delete one of them. The account game, but until I have not responded, but I can only do this to solve this problem.
Sorry but my code is different with code of 18tin_nntan/45607672!!! I think my making is some same with this code may be because I and he have the same think!! Because this test is so short and the making is so easy to see!! So i thnks that is the reason why my code is same wiht 18tin_nntan/45607672. It is belong to maths!! And i use maths formula to resolve it!! I don't know him. I wish admin will review my code. Thanks you very much!!!
I didn't cheat.but I got out of the contest. It's unfair.
I got a message from system that my submission 46154222 during the Codeforces Round #524, has been found significantly similar to 46154175 and my submission get skipped.
Both of the submissions were made by me for Question C, and I have submit it to both my account.
I request the community to help me out here as I don't know whom should I contact about this.
Is it fine to take a piece of code from stack overflow or Github (e.g a sorting algorithm) ?
I'm new to this (obviously) : )
you can
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i was using ideone in the public mode during the contest while solving B problem of Hello 2019 and i have not copied the solution and the only evidence about coincident clashing of solutions is that i was using public mode of ideone.
and moreover i was not aware of the rules
Sorry! I got the code from my friend.
First , I need to say sorry to codeforces . That submission'id is my another id.The two id both are mine,so we submit the same submission.That time I don't mean that was violation,I just think it's to do experimence. I ware of the importance of it,please give me a chance,I won't do that again.
Sorry but it was a coincidence .. I published my code on ideone.com that's why the problem has occured
Sorry but it was a coincidence ..... I published my code on ideone.com that's why the problem has occured. Please give my ratings back
sorry,i used to do the similar problem on luogu.org.The other one is my classate,maybe we have many things in common,but i am sure we didn't communicate during the contest.
we usually learn on the same text book，it is obviously that we would have something in common，but we never cheat during the contest.
Sorry for the problem that occurred. I was unaware of the fact that ideone.com has settings like Public or private. Sorry if I degraded the tempo of the contest plz forgive me this time, I 'll ensure that same never happens in the future.This is the first tym I came across such a problem. I truly ensure u that in upcoming future it wont happen. Sorry
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Hello, I received a message saying that my solution for Div2D of round #546 coincides with the code of other users. The code is clearly different and for a problem with such a short solution it is likely for the code to be similar. Please look into this.
Here is my submission which got flagged: https://codeforces.net/contest/1136/submission/51189268
Here are the other ones which were compared: https://codeforces.net/contest/1136/submission/51184411 https://codeforces.net/contest/1136/submission/51186289
https://codeforces.net/contest/1136/submission/51188835 My solution also got skipped i'm sure that no one took my code. The problem need 40~50 lines of code it's normal that to many codes are similar.
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give back my ratings i din't copied i ran my code in ideone.com that was my mistake and also you can the see the way i wrote the code is completely different than the others.you can view my past submissions you will find it. the way of writing code is different i also wrote my initals firefox at top of each code my initialisation for every code is the same refer my previous submission
I used Ideone for the problem 1985G and wasn't aware about the rules and the public or private mode, I request you to not block me or give me any penalties. I apologize for my mistake. Kindly, give my ratings back.
Sorry.We shared our ideas in the contest.I promise i will not do it again.
I really hope for it.
Thank you for alerting me.I will remember this lesson.
Sorry, I don't know what is going on. Why is the code I write myself the same as others?
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hello codeforces, i had a message after Codeforces Round #552 (Div. 3) .which says that Your solution 52860738 for the problem 1154C significantly coincides with solutions 2018030402024/52858419, 2018030402055/52860738.i want to say that both of the accounts were mine. i want to try my code on another account and i don't know the rules of submissions . But i promise that i won't make this mistake again.Don't block my accounts.
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The messsage i received : Attention!
Your solution 53512345 for the problem 1150B significantly coincides with solutions k180231/53512345, Muhammad4hmed/53512578. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. In case of repeated violations, your account may be blocked.
Actually me and Muhammad4hmed was solving problems together and he used my built logic actually we both are new and have no idea about the rules of codeforces. Kindly forgive us this time, we will be careful from next time.
Those submissions are character-to-character identical. Doesn't sound like "Actually me and Muhammad4hmed was solving problems together and he used my built logic".
bro we were sitting together and we solving in team
i don't know whether is this allowed or not
but it was the case.
Ignorantia legis non excusat
hello today I got 2 message from system stated below. Attention!
Your solution 54290305 for the problem 1166A significantly coincides with solutions babuji/54290214, sourabh54singh/54290305, hehe172719/54290376. Attention!
Your solution 54300094 for the problem 1166B significantly coincides with solutions Krotonic/54299987, sourabh54singh/54300094.
You can match the pattern of all my past submissions with these submissions, they are same.
Both these submissions were too late after my submissions and I was using ideone compiler whose visibility was set to public which I was not aware of . I have screenshots of ideone pages as proof. Please make the contest rated for me . I will not repeat the mistake again.
Attention!
Your solution 55438593 for the problem 1182A significantly coincides with solutions nashugame/55438593, shadyman123/55445818. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. In case of repeated violations, your account may be blocked.
I have got this message from the system of codeforces I would like to clear that shadyman123 is a friend of mine at my college. Thus it was during one of those post competition discussions that I showed him my code and he too began using the same macros. As for the logic of the code I don't think that he could have done it any differently he could have differed his solution with mine in terms of only power function. As an evidence you can check that I have been using those macros previously than him. I hereby request you to please do not punish us with penalties.
Your solution 55459961 for the problem 1182C significantly coincides with solutions Athena_1111/55457716, Anti-Mirzayanov/55458879, gandhipaaji/55458903, shreyanshgeek_unofficial/55458966, Harsh_jiit/55459119, turtle407/55459150, kaptaan/55459742, firefox/55459961, shivansh100/55460142, Izanagi/55460447.
you can view my other submissions and can found out the macros i use its the same .the way i code is the same.the logic might have coincided doesn't mean that i have cheated. please give back my ratings. And also you can check my other submission you will found out that i am not guilty.
~~~~~
How can you be such a liar? You copied my code literally. It's better to apologize rather than begging for something you don't deserve.
Attention!
Your solution 55457716 for the problem 1182C significantly coincides with solutions Athena_1111/55457716, Anti-Mirzayanov/55458879, gandhipaaji/55458903, shreyanshgeek_unofficial/55458966, Harsh_jiit/55459119, turtle407/55459150, kaptaan/55459742, firefox/55459961, shivansh100/55460142, Izanagi/55460447. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. In case of repeated violations, your account may be blocked.
I just got this message. I want to clarify that I was using the online compiler ideone.com without knowing that apparently my code was public. I have not copied the code of anyone!! You can check the timing. I have written every line of this code. I haven’t even used functions form any websites. It really pains to receive this message in the first contest where I do well. What a luck!!!!!!! :/
Plus you can check the format of this solution with my other solutions. It’s the same.
Good evening.
I joined the last Codeforces Round(#566,div2) , but it turned out that "my solution 55459352 for the problem 1182E significantly coincides with solutions AH_ljq/55459352, wh_ZH/55461495".
wh_ZH is one of my classmates, you can see that we are in the same organization "ASDFZ". Before the Round finshed, I shared my methed with him. He got it, and finally he solved the problem as well.
I promise that I thought and solved this problem on my own. One reason is that my solution is ealier than his.
My submissions were skipped, and my rating drops a lot. Wish you can change the judgement of this round to me.
Best wishes.
I'm sorry for my fault at that round, and I won't do like that any more. Tanks for giving me a chance to correct it.
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ideone shouldn't be used during participating in contests as your solutions may be shared with other participants so you may use ideone in private mode(not secret) or the best solution is to use an offline IDE(eg:- DevC++,CodeBlocks) or Codeforces IDE in custom innovation tab or use Geeks for geeks IDE
Attention!
Your solution 55893152 for the problem 1180B significantly coincides with solutions Yaman211/55892304, KMPK/55893152. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. In case of repeated violations, your account may be blocked.
my submit isn't like yaman211 submit and i am who write this code and there are alot of similar code of my code and his code plus you can check the format of this solution with my other solutions. It’s the same.
i hope return my rate back..
And why you are remove my solution and leave me in the contest thats hurt my rate alot At least return the previous rate for me
I managed to reach this rate after 2 months of training Please help me
In the last div 2 contest, i had another browser opened and logged in condeforces with my another CF account which i rarely use to practice. At first I accidentally submitted a sloution from that account and then again submitted it from my original account. I have proof that both of them is my account. so please give my ratings back
AFAIK, having more than 1 account is prohibited
I'm sorry it was a coincidence.I was not aware and published my code on ideone.com. I respect the community and it would not be repeated next time.
Attention!
Your solution 56319919 for the problem 1187A significantly coincides with solutions dsheikh/56318585, Malik99/56319919. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. In case of repeated violations, your account may be blocked.
What is this?? It was not a case of plagiarism as such a small snippet of code is likely to be same, it's just a mere coincidence and nothing else. Please undo this action.
Man, your code and code of dsheikh are actually the same. Just dont cheat next time
Man, it's just coincidence and nothing else.
The solutions are exactly the same, it cant be a coincidence
same everything except you change t to z
just don't cheat to get rating, you will regret it
this is another level
Attention! Your solution 56572241 for the problem 1189B significantly coincides with solutions shahTheshah/56571732, cycle/56572241. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. In case of repeated violations, your account may be blocked.
Attention! Your solution 56572160 for the problem 1189A significantly coincides with solutions shahTheshah/56565707, cycle/56572160. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. In case of repeated violations, your account may be blocked.
Sorry ! I didn't know the rules about submitting same code from two different accounts.Both accounts ("shaTheshah" and "cycle") are mine. I won't repeat this in future. Thanks
Having multiple accounts is also against the rules iirc.
Hello Everyone, I got a message from system that my solution 56579375 for the problem 1189B, has been found significantly similar to someone else's solution and a warning that my account may get blocked due to this. I wrote a very basic solution for that problem which was a short cut method, and it may possibly match with someone else's because no particular algorithm was applied in it and I used basic c++ syntax. I request the community to help me out and make my solutions valid for the round 1189B.
sir i used ideone and the user copied my submission from ideone . i did it by mistake sorry for the mistake the person was unrated and had no experience he misused ideone :( .The person name is Anonymous_CF_Tester/57406704 i didnt even knew him punish him he submitted later then me thats also the proof for this take strict action against him