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Re:这题貌似数据弱了。看下面这个数据

Posted by lb1988 at 2009-08-16 15:11:13 on Problem 3398
In Reply To:Re:这题貌似数据弱了。看下面这个数据 Posted by:bjtu1 at 2009-07-23 11:55:59 
> 结果显然是2吧，LZ楼主想错了。。
麻烦楼上的解释下2怎么来的？？？  我怎么看也是3呀  除非我题目理解错了
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