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因为例子只给了分两个组开始以为只分两组,不过也不算说明问题

Posted by first at 2003-12-27 22:19:45 on Problem 1032
In Reply To:这个题目叙述有问题？ Posted by:hawk at 2003-12-27 20:24:28 
> 哪部分，怎么改
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