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楼上真强...........

Posted by ziliang at 2007-01-03 17:49:06 on Problem 3160
In Reply To:Re:是 Posted by:freeeerf at 2006-12-31 14:45:44
> 但是你看例子中给出的数据:
> 0 1
> 1 0
> 如果是单向的,怎么会是这样?

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