The problem is:

来源: botong 于 2009-07-24 10:24:43 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (72 bytes)
回答: 挑战所有程序员 由 botong 于 2009-07-23 13:03:03

you put a few statements together, which is not the original requirement

请您先登陆，再发跟帖！