前面都不错
所有跟帖:
• perhaps it is better now. -Jack.Li- ♀ (260 bytes) () 06/05/2006 postreply 09:07:04
• sorry, for B and A, do some proper selection. -Jack.Li- ♀ (55 bytes) () 06/05/2006 postreply 09:22:07
• 答对了:) -说了就走- ♂ (0 bytes) () 06/05/2006 postreply 09:26:08
• thank you. it is a nice and (tight) problem:-) -Jack.Li- ♀ (0 bytes) () 06/05/2006 postreply 09:32:02