May 2008
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Nov 2011
Sep 2023
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
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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.

hendrik
Jan '12

I also doubt that. Too many tough problems solved in HASK on the first attempt. I think that happens if people publish their solutions, which cant be avoided.

francky
Jan '12

Marked activity these last three days.
I'm not here since many times, but imho, this situation is very strange. So silent.
I saw him on AU1215, a very easy problem, with few submissions, his solution seems to have different memory usage than the ones with similar execution time.
But so many suspicions were shown...

13 days later
saloni_nit_sof
Jan '12

spoj.pl/status/geekwizard/5

hello admin...plz check how dis person is submitting 58 ques in a span of 3 hours...further the name used within as his name is also is rubbish...plz ban such type of users its all in your hand...

system
Jan '12

geekwizard is indeed cheating. His two AC's in python for problem WORDNUM aren't genuine.

1 month later
cyclops
Mar '12

User allada aka Revanth submitted solutions for Bytecode 2012 contest problems in quick succession. (Submissions 6611507 to 6611545.) The questions are mostly on the difficult side..