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不可能就是0吧

Posted by sunmoonstar_love at 2006-10-09 11:45:36 on Problem 1240
In Reply To:貌似这道题少了个判不可能..... Posted by:wywcgs at 2006-10-09 10:22:43 
> 真恶心....
> 不要说其他的题都有出处....
> 那就BT了.....
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