I think you should have a look on the problem statistics once again.
Ranking Submission User Run Time Language Submission Date
1 6549872 Abdul Kader(MAK) 0.000 C++ 2008-07-24 19:07:32
2 1551258 0.004 C++ 2003-04-29 05:17:29
3 1601973 Ryan Hadley 0.004 C++ 2003-05-21 05:39:32
4 1622847 nosy 0.004 ANSI C 2003-05-31 12:09:50
5 1678998 Eduardo Figueiredo 0.004 PASCAL 2003-06-24 23:02:24
6 2089706 Gustavo Wagner 0.004 C++ 2003-11-20 04:50:49
7 2210852 rainfarmerX 0.004 C++ 2004-01-12 15:37:57
8 2308512 tumkoepfe 2003 0.004 C++ 2004-02-18 15:32:07
9 2352758 Melvin Zhang 0.004 C++ 2004-03-05 16:01:16
10 2354808 Grzegorz Lukasik 0.004 C++ 2004-03-06 10:22:12
11 2491659 Marcin Rogozi 0.004 C++ 2004-04-29 18:58:05
12 2660937 nal a 0.004 ANSI C 2004-07-09 14:41:16
13 2765577 Marcin Wielgus 0.004 C++ 2004-08-14 16:29:03
14 2786626 Ngo Thanh Son 0.004 ANSI C 2004-08-22 10:03:31
15 2965660 Ivan Chen 0.004 C++ 2004-10-12 18:45:30
16 3467910 Ivo Sluganovic 0.004 C++ 2005-04-10 19:03:06
17 3509154 Halisson Rodrigo 0.004 C++ 2005-04-25 11:43:47
18 3509859 Joel Silva Uchoa 0.004 ANSI C 2005-04-25 17:25:01
19 3509866 [UECE - Randomic Programming] 0.004 ANSI C 2005-04-25 17:27:23
20 4836892 Leonid Šišlo 0.004 C++ 2006-08-16 17:14:22