Cheating

francky · Apr '13

http://www.spoj.com/users/sundar_mic/ aka chandler.
I think he will be soon banished.

Please let us know if other people like this one should be stopped.
1) Those people don't learn anything.
2) They stole points of every other solvers.

mostafa_sof · Jul '13

Please I want to Report this user :
spoj.com/users/saurabhshahpur/
who is the same user
spoj.com/users/bismith_sidd3/
I've asked him to disqualify one of his two accounts here
www.spoj.com/problems/ICKHELLO
and i've disqualified one of his two submittions , but he submitted the solutions more and more with both accounts .
What Should I do ?

mostafa_sof · Aug '13

Look at this amazing part of "Terms of Services" in Coursera website .... I think they should add one in spoj ...

tjandra_sof · Aug '13

I agree. Both user is also submitted same code to my problem CRCLE_E1. Here is the screenshot:

By the way, this picture isn't spoiler because it only show <25% of overall code. and only contain meaningless information.

It's hard to clean all cheater. Because currently there are more than 200K users on SPOJ. I just consider the big cheater with high points (on main SPOJ site), rapidly solve many problem just in few minutes. If I found cheater with match that criteria, I'll definitely report here to be banned by admin.

luckymastermin · Sep '13

Hey Admin can you check this user.
he have solved more than 100 problems in an hour

.....227 in a day

spoj.com/status/groucho_02/10

testaccount_ · Sep '13

This person is also suspicious: spoj.com/users/baladeva/7

He has made his username some whitespace characters, so it is unclickable from status page.

Simes_sof · Nov '13

This is a suspicious rate of submissions
spoj.com/status/vigneshb06/1

[admin note: thank you - blocked]

ouditchya · Nov '13

Respected Sir,

Please look into this account : [spoj.com/users/hariprasath/](http://www.spoj.com/users/hariprasath/)

The user has submitted too many solutions in a very short time frame as on 08.11.2013 & it seems suspicious.

Your Sincerely,
Ouditchya Sinha.

luckymastermin · Nov '13

Hi Admin I am sure this user is not genuine he have submitted more than 150 problems in an hour.
spoj.com/users/hariprasath/2

[admin note: thank you - blocked]

campos20 · Jan '14

Suspicious

spoj.com/users/voozism/1

Has solved over 500 in a month. In December 31th, 144 AC.

francky · Feb '14

Another cheater : Decoder4

[admin note: thank you - blocked]

luckymastermin · Feb '14

spoj.com/users/jvr1201nit/

another one please block this.

francky · Feb '14

This one is very curious.
http://spojtweet.appspot.com/user/good_alakazam4
http://www.spoj.com/users/good_alakazam/5

Curious because his solution for two of my problems are quite genuine, but submit a flow of easy probs sometimes each 20s !!!
So very curious.

luckymastermin · Feb '14

Suspicious

spoj.com/users/back_again/3

francky · Mar '14

I find very annoying cheaters that destroy PIBO problem (and many others), see here3 and here2 ; I guess all codes with 1.86±0.01s 3.0M C++ are clones...
Last user Legrand2 have yet often do the same. Note that he's not always a cheater.

===

had been yet banished1... still present, curious.
On my problem REBOUND, he viciously unindent a code found on the web. This user could be banished again.

===

Kaushik Barman (id recently changed to "power boy") had been yet banished last year. He's back with a new probable technic : copy/paste a code ; change some few chars ; oh, incredible, I have RE or SIGSEV or WA ; try again one two times, and then AC ; wait some minutes do the same with another problem. We are not fool.

==

Please report strange actions, and suggests propositions to ovoid such things.

freejamaica · Mar '14

I think user thales is cheating (http://www.spoj.com/users/thales/2). His behaviour is very suspicious.

Edit(Francky) : Exact ; http://spojtweet.appspot.com/user/thales1, I hope all those kind of account disappear one day.

francky · Mar '14

A new one : http://www.spoj.com/status/makaveli/8 : Dariusz Lasecki

He 'does' that Sunday evening, haha.
Last week :

And the previous Sunday :

freejamaica · Mar '14

But what can we do about these users? Just reporting them is not fixing the problem. I think they should be immediately removed.

francky · Mar '14

Another one (edit : maybe/maybe not...??????):
http://www.spoj.com/status/sanguine13/6 : S. R. Putra

11365531 2014-03-31 18:01:54 Naive Loki accepted 0.00 2.6M
11365525 2014-03-31 18:01:04 Spheres accepted 0.26 2.6M
11365521 2014-03-31 18:00:33 Determine the vismin value ! accepted 0.20 3.8M
11365513 2014-03-31 17:59:39 King accepted 0.94 2.8M
11365510 2014-03-31 17:59:03 abdou set accepted 0.08 2.6M
11365502 2014-03-31 17:58:13 Find Lexicographically Smallest Permutation accepted 0.04 2.8M
11365498 2014-03-31 17:57:34 Help Feluda with mathematical equations accepted 2.61 2.9M
11365493 2014-03-31 17:56:58 Help Donn accepted 0.00 2.6M
11365486 2014-03-31 17:56:13 Good Code accepted 0.27 2.6M
11365483 2014-03-31 17:55:29 GAMING ARENA accepted 0.03 2.6M
11365478 2014-03-31 17:54:51 FRIEND CIRCLE accepted 0.42 3.3M
11365474 2014-03-31 17:54:12 Enemies accepted 0.12 2.8M
11365402 2014-03-31 17:39:21 Modems accepted 0.05 2.6M
11365397 2014-03-31 17:38:34 Dexters Trampoline accepted 0.00 2.9M
11365391 2014-03-31 17:37:39 Find the Treasure accepted 1.45 7.5M
11365385 2014-03-31 17:36:30 End of Fun accepted 0.19 2.8M
11364502 2014-03-31 15:19:16 End of Fun accepted 0.17 2.8M
11364494 2014-03-31 15:17:45 Football Fever accepted 0.00 3.9M
11364489 2014-03-31 15:17:14 Colorful Circle (EASY) accepted 0.16 2.6M

(Only a part of the fact)
Edit : But according to two submissions on two of my problems, solutions seems genuine.
This is a very curious thing in any case ...
A (reasonable) possibility for that user is : he deleted his account, create a new one and submit it's own AC solution again. But I'm not sure...

===
@storyless : when admin take a look at this thread, they make some clean up.
I hope there will be one day an automatic tool to prevent such pollution.

francky · Apr '14

Another one : Pritha D N : http://www.spoj.com/status/prithan/14
Please ban him.

********************************************************************************
*      Signed document issued by Sphere Online Judge  (http://www.spoj.com)      
********************************************************************************
----- BEGIN OF DATA -----
Submissions by [prithan] in contest [SPOJ].  DoI: 2014-04-10 10:22:41.
/------------------------------------------------------------------------------\
|   ID    |        DATE         |  PROBLEM  |  RESULT   | TIME  |  MEM   | LNG |
|---------|---------------------|-----------|-----------|-------|--------|-----|
| 11418993 | 2014-04-10 10:22:40 |   SPOINTS |        ?? |  0.00 |      0 | C++ |
| 11418988 | 2014-04-10 10:22:13 |   SOLDIER |        ?? |  0.00 |      0 | C++ |
| 11418986 | 2014-04-10 10:21:46 |   SNOOKER |        AC |  0.01 |   2688 | C++ |
| 11418984 | 2014-04-10 10:21:20 |   SKYLINE |        AC |  0.07 |   3276 | C++ |
| 11418979 | 2014-04-10 10:20:53 |  SAMER08E |        AC |  0.03 |   2688 | C++ |
| 11418976 | 2014-04-10 10:20:12 |      RPLN |        AC | 10.02 |  11904 | C++ |
| 11418972 | 2014-04-10 10:19:44 |      RPLL |        AC |  0.00 |   2688 | C++ |
| 11418953 | 2014-04-10 10:15:46 |      RPLK |        AC |  5.02 |   3468 | C++ |
| 11418952 | 2014-04-10 10:15:20 |   REBOUND |        AC |  0.48 |   2688 | C++ |
| 11418951 | 2014-04-10 10:14:59 |       PRO |        AC |  0.90 |   7440 | C++ |
| 11418950 | 2014-04-10 10:14:25 |    PRIME1 |        AC |  0.05 |   2700 | C++ |
| 11418946 | 2014-04-10 10:13:52 |   PLYGRND |        AC |  0.02 |   2688 | C++ |
| 11418943 | 2014-04-10 10:13:28 |   PERMUT2 |        AC |  0.62 |   3000 | C++ |
| 11418941 | 2014-04-10 10:13:09 |   PERMUT1 |        AC |  0.00 |   2696 | C++ |
| 11418940 | 2014-04-10 10:12:51 |   PERMUT2 |        CE |  0.00 |      0 | ADA |
| 11418937 | 2014-04-10 10:12:22 |   PERMUT1 |        CE |  0.00 |      0 | ADA |
| 11418821 | 2014-04-10 09:31:13 |   PEBBMOV |        AC |  0.09 |   3220 | C++ |
| 11418818 | 2014-04-10 09:30:49 |  PATHEADS |        AC |  5.48 |  10888 | C++ |
| 11418814 | 2014-04-10 09:30:21 |  PANCAKES |        AC |  0.02 |   2688 | C++ |
| 11418810 | 2014-04-10 09:29:57 |    PALACE |        AC |  0.00 |   2688 | C++ |
| 11418808 | 2014-04-10 09:29:37 |    ORDERS |        AC |  0.85 | 135936 | C++ |
| 11418806 | 2014-04-10 09:29:10 |   NICEDAY |        AC |  1.19 |   4936 | C++ |
| 11418803 | 2014-04-10 09:28:49 |  NG1FRCTN |        AC |  0.19 |   2688 | C++ |
| 11418800 | 2014-04-10 09:28:22 |     MZVRK |        AC |  0.04 |   2688 | C++ |
| 11418797 | 2014-04-10 09:27:59 |   MSTRMND |        AC |  0.00 |   2688 | C++ |
| 11418796 | 2014-04-10 09:27:33 |   MMMGAME |        AC |  0.00 |   2688 | C++ |
| 11418791 | 2014-04-10 09:26:40 |     MMASS |        AC |  0.02 |   2824 | C++ |
| 11418788 | 2014-04-10 09:26:17 |   MINMOVE |        AC |  0.07 |   2712 | C++ |
| 11418787 | 2014-04-10 09:25:54 |    MBINGO |        AC |  0.37 |   2688 | C++ |
| 11418778 | 2014-04-10 09:24:25 |   MARBLES |        AC |  0.00 |   2688 | C++ |
| 11418774 | 2014-04-10 09:23:57 |      LWAR |        AC |  0.07 |   2716 | C++ |
| 11418772 | 2014-04-10 09:23:31 |      LLCA |        AC |  0.00 |   2688 | C++ |
| 11418766 | 2014-04-10 09:22:56 |     JULKA |        RE |  0.02 |  14416 | C++ |
| 11418763 | 2014-04-10 09:22:31 |   INUMBER |        AC |  6.20 |  14416 | C++ |
| 11418758 | 2014-04-10 09:21:45 |    INCSEQ |        AC |  0.89 |   5188 | C++ |
| 11418756 | 2014-04-10 09:21:12 |   INCDSEQ |        AC |  1.86 |   7236 | C++ |
| 11418752 | 2014-04-10 09:20:08 |     IKEYB |        AC |  1.56 |   2764 | C++ |
| 11418748 | 2014-04-10 09:19:30 |    ICODER |        WA |  0.00 |   2684 | C++ |
| 11418744 | 2014-04-10 09:19:03 |  HANGOVER |        AC |  0.00 |   2688 | C++ |
| 11418740 | 2014-04-10 09:18:36 |   GROCERY |        AC |  0.49 |   2684 | C++ |
| 11418736 | 2014-04-10 09:17:54 |    GNY07E |        AC |  0.03 |   2688 | C++ |
| 11418731 | 2014-04-10 09:17:22 |    FENCE1 |        AC |  0.00 |   2688 | C++ |
| 11418729 | 2014-04-10 09:16:56 |     FCTRL |        AC |  0.20 |   2688 | C++ |
| 11418726 | 2014-04-10 09:16:25 |   FASHION |        AC |  0.10 |      0 | C++ |
| 11418722 | 2014-04-10 09:15:52 |  FAMWEALT |        CE |  0.00 |      0 | C++ |
| 11418716 | 2014-04-10 09:15:12 |  ENCONDIN |        AC |  0.01 |   2688 | C++ |
| 11418713 | 2014-04-10 09:14:09 |     DYZIO |        AC |  0.00 |   2704 | C++ |
| 11418711 | 2014-04-10 09:13:42 |  DCEPC504 |        CE |  0.00 |      0 | C++ |
| 11418706 | 2014-04-10 09:12:54 |  CYLINDER |        AC |  0.04 |   2688 | C++ |
| 11418700 | 2014-04-10 09:12:06 |       CPC |        AC |  0.04 |   2688 | C++ |
| 11418699 | 2014-04-10 09:11:41 |    COLONY |        CE |  0.00 |      0 | C++ |
| 11418697 | 2014-04-10 09:11:18 |    COLONY |        CE |  0.00 |      0 |   C |
| 11418689 | 2014-04-10 09:09:59 |     COINS |        AC |  0.01 |   2824 | C++ |
| 11418681 | 2014-04-10 09:09:08 |   CFPARTY |        AC |  0.20 |   2688 | C++ |
| 11418673 | 2014-04-10 09:08:06 |     CF36D |        AC |  0.07 |   2688 | C++ |
| 11418668 | 2014-04-10 09:07:04 |    CANDY3 |        AC |  0.04 |   2688 | C++ |
| 11418659 | 2014-04-10 09:05:28 |     CANDY |        AC |  0.01 |   2688 | C++ |
| 11258641 | 2014-03-16 08:19:13 |   BISHOPS |        CE |  0.00 |      0 |   C |
| 11258640 | 2014-03-16 08:18:34 |   BISHOPS |        CE |  0.00 |      0 | C++ |
| 11258634 | 2014-03-16 08:16:32 |   BISHOPS |        CE |  0.00 |      0 | C++ |
| 11253163 | 2014-03-15 09:43:02 |  BINSTIRL |        AC |  0.00 |   2688 | C++ |
| 11252460 | 2014-03-15 07:52:44 |   BHAT007 |        AC |  0.00 |   2688 | C++ |
| 11242924 | 2014-03-13 17:54:31 |    BABTWR |        AC |  0.00 |   2688 | C++ |
| 11242918 | 2014-03-13 17:53:24 |    BABTWR |        CE |  0.00 |      0 |   C |
| 11242907 | 2014-03-13 17:51:36 |    ARITH2 |        AC |  0.11 |   2688 | C++ |
| 11242879 | 2014-03-13 17:47:14 |    STAMPS |        AC |  0.16 |   2824 | C++ |
| 11242871 | 2014-03-13 17:45:43 |     BEADS |        AC |  0.95 |   2696 | C++ |
| 11217449 | 2014-03-09 20:43:21 |   PERMUT1 |        AC |  0.02 |   5584 |   C |
| 11217401 | 2014-03-09 20:34:46 |   PERMUT1 |        WA |  0.00 |   5584 |   C |
| 11216623 | 2014-03-09 17:36:25 |   ACPC10A |        AC |  0.00 |   1720 |   C |
| 11216586 | 2014-03-09 17:29:39 |   ACPC10A |        RE |  0.02 |   1676 |   C |
| 11215528 | 2014-03-09 14:38:54 |    PRIME1 |       TLE | -1.00 |   1680 |   C |
| 11215425 | 2014-03-09 14:16:58 |    PRIME1 |       TLE | -1.00 |   1680 |   C |
| 11215390 | 2014-03-09 14:10:41 |    PRIME1 |       TLE | -1.00 |   1680 |   C |
| 11215387 | 2014-03-09 14:10:25 |    PRIME1 |        CE |  0.00 |      0 | ADA |
| 11215380 | 2014-03-09 14:08:40 |    PRIME1 |        CE |  0.00 |      0 | ADA |
| 11215113 | 2014-03-09 13:15:43 |      TEST |        AC |  0.00 |   2252 |   C |
| 11215103 | 2014-03-09 13:13:50 |      TEST |        RE |  0.00 |   2252 |   C |
\------------------------------------------------------------------------------/
----- SIGNATURE -----
X22WuC5fLtp3xhpy1lJvXw8vb0lrOg2RqlQuE8W4Km81A8nPmfmBs4C5/9Q8iHLq0csEVh4pUOr/
+AVq792IpAZoYiIa1oirOyP5ftq8ChosifQ0vBSJbi4ZaRw7989FB+i45C1yRqoNEbYWEskTG/L3
7/+Znf1Ei46BX1vVJ1c=
----- END OF DATA -----
********************************************************************************
Disclaimer:       Document for internal use only. No liability shall be assumed.
********************************************************************************

share a link to this topic