2) It is incorrect to use permutation here, as there can be ties.
1) No point to go any further. Let's stop right here
• OK. -jinjing- ♀ (0 bytes) () 03/21/2011 postreply 16:05:17
• 康mm進 -guest007- ♂ (165 bytes) () 03/21/2011 postreply 16:46:37
• 回複:康mm進 -康mm- ♀ (127 bytes) () 03/22/2011 postreply 05:03:02