we are working on anty-cheating system on SPOJ...
first of all, we allow users "collecting AC solutions"
to check the flag = user not included in ranking...
generally, dura lex sed lex... so, do not cheat!
Nice to see that adminstrators taking cheating seriously.
Between this user spoj.pl/users/kumaranurag/10 submitted 39 problems in 2 days (till now). A cheat or a Super Programmer ?
& that macedonian_boy is still in the ranking system ?! :
Submission #2459713(https://www.spoj.pl/files/src/2459713/11 Problem: EPALIN) by macedonian_boy is also clearly the same as amaroq's submission. Why is this guy still on the ranklist?
on problem: MOBIVINA
spoj.pl/files/src/2474683/3
(i made the #2474686 WA)
three possibilites:
1) we provided (auto-)disqualification, hence the author can disq his own solution
2) we provide a check-box - "not included in ranking" (but the submissions will affect on other points) (is it good idea? any suggestions?)
3) we can ban the user
after we provide (2) - we will warn cheaters (in global news) and explain in details the rules,
after week or two - we start to ban all cheaters - pointed out by community... (esp. EB team)
any suggestions are welcome
macedonian_boy is outside official ranking, but still has points in his profile:
spoj.pl/users/macedonian_boy/4 is it ok?
[his points are affecting other ranks/points]
I hope he will disqualify all his suspicious submissions...
after that they won't be in ranking nor profile...
Many people Accepted the problems with language TEXT,which of the problem [color=#FF0000]CANNOT[/color] been solved with TEXT at all.They must have been [color=#FF0000]CHEATING[/color]as download datas form the web!
Such as:1357355 2008-03-12 17:33:52 Labyrinth accepted 0.00 1.6M TEXT
and so on.
Admin can forbid us to use TEXT for those problems which can not been solved without cheating.
Oh pengyuhan, you are so cool, you found that :mrgreen:
What do you think, can't they solve the same problem without text ? in, say, Python? What will you do then ?
Maybe it would be better to stop looking to others and just solve problems ?
Haha,I am not always "looking to others",and I've just found it after I solve the same problem......
Maybe you're right.I am not admin,and that is not my duty to do so......
But your name is also so cool...
I think this person is cheating
spoj.pl/users/kumaranurag/2
He seems to have submitted the entire Kurukshetra set one after another, which is quite suspicious. Authors may confirm this, perhaps I am wrong.

I think this person is cheating
spoj.pl/users/kumaranurag/He seems to have submitted the entire Kurukshetra set one after another, which is quite suspicious. Authors may confirm this, perhaps I am wrong.
Yes you are right kumaranurag is a cheat,
I Flagged him to the administrators previously but no body seems to be interested
This user https://www.spoj.pl/users/ahmed_aly_tc/2 is obviously cheating:
Submitting AC solutions to several problems about every 3 seconds (!).
He posted solutions to more than 100 problems in less than 10 minutes
Edit: It took him 8 min from rank 0 to 123 ...

This user https://www.spoj.pl/users/ahmed_aly_tc/ is obviously cheating:
Submitting AC solutions to several problems about every 3 seconds (!).He posted solutions to more than 100 problems in less than 10 minutes
Edit: It took him 8 min from rank 0 to 123 ...
It looks like ahmed_aly_tc is a clone of ahmed_aly.