May 2008
156 / 315
Feb 2011
Sep 2023
numerix
Feb '11

After my comment below the problem had been deleted without any note or explanation of the problemsetters (to whom you are related), I saw no other way to point these things out than using the forums cheating-thread.

It seems that moderators have not interest in that case and it's not up to me to tell you, if or when to submit a solution.

IMHO one shouldn't submit a solution to a problem at all, if he belongs to the group of problemsetters and thus knows (or at least could know) the problem's input and expected output as well as other users AC code.

mido22_sof
Feb '11

at first problem not removed!!!
secondly : i want one of moderators to tell me if something wrong i do and i post all the story in this subject i'm not afraid from anyone but i want to know why i posted in cheating subject ..... and what can i do know .... also numerix asked to add different languages in problem with more test cases and done now i asked when can i submit my solution but numerix tell me now i shouldn't submit for the problem .... plz i need moderator to reply and tell all of them if i had done something wrong and what can i do ? if i was right in every thing plz told the users and remove my name from this subject

kokosek
Feb '11

I think printscreen would be enought. wink
You can send it to numerix if You and he want because I wanted only to show my point of view and don't care about cheaters (except these with many points from SPOJPL).
Sorry for washing my hands.

system
Feb '11

296...nice. 377 is my best till now and i think i am missing something.

numerix
Feb '11

The problemsetters opened the problem for some other languages again - thanks for that.

My other suggestion was to increase the number of testcases in a way that even someone who knows the expected output and thus could submit a code that only prints that output (instead of processing the input data) has no chance to get a short code.
If you look at the changes they made at the problem description, it seems that the number of test cases has really increased ("15 to 20").
But that isn't true. The only change is adding the number of testcases as first line of input data, but there are still only 7 testcases!
Problemsetters, if you are really interested in avoiding any "bad taste": Why do you do such things? Why not producing an input of, say, 200 lines.
Just write a short piece of code and generate 200 random testcases, perhaps add some special cases and even one who knows about the i/o doesn't have any advantage by that.

system
Feb '11

I agree with numerix. My best solution will fail for several cases. But due to weak test data it got accepted.

21 days later
10 days later
4 months later
2 months later
butabil_sof
Nov '11

I regret to say, there exist some indications that Rully Soelaiman (arena) might be a cheater. That would be devastating, because I believed that he was brilliant coder worthy of position next to Oleg and Xilinx, not a cheater.
I have posted 1 problem on spoj, and my friends many more. They all say that Rully posted someone's code. As for my problem this is true, and I disq his solution.

Please look into it. If I am wrong I apologise to all of you, especially to Rully for saying this stuff.

numerix
Nov '11

The following I can confirm for my problemset PRIMPERM23:
The solution of Rully Soelaiman32, submitted on 02-05-2011, is byte by byte identical to the solution of Tegg62, submitted on 29-04-2011.

system
Nov '11

I have seen him submitting solutions to multiple problems under a minute. But he has also solved several difficult problems having less than 10 AC solutions. May be he is some kind of professor in the institute having access to spoj account of all students.

numerix
Nov '11

User alrezza21 (name of the ancients) has 450 problems solved within a single week, submitting one solution after another. Must be a genius.

16 days later
numerix
Dec '11

I'm sorry, but again it is very obvious that Rully Soelaiman15 continues submitting others solutions:
Solutions to NWERC11A .. NWERC11J are those of Jonathan Schmidt-Dominé ...

system
Dec '11

Now i get how Institut Teknologi Sepuluh Nopember is at top in the institute ranking.

elhipercubo
Dec '11

Every single one of Rully Soelaiman's submissions to my problems have been either one of the judges' official solutions, or solutions taken out from different Chinese blogs which are not his.

15 days later
budabudimir
Dec '11

Yes I have also posted a task, called DPAIR. Rully sent lychees ' s solution.

14 days later
zukow_sof
Jan '12

I really don't like this unresolved situation. Rully Soelaiman is/was one of the top users and I think it's a high priority. His account is still active and he once is and once isn't on the ranking list. Please resolve this situation and either clear him of cheating suspicions or delete the account with all the submissions, so that they are also not included in specific problem lists.