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也不算特别变态吧,想清楚了也还是挺容易的.

Posted by xfxyjwf at 2005-08-03 22:24:30 on Problem 2523
In Reply To:enen Posted by:frkstyc at 2005-08-03 22:22:25 
搞好了输入输出,基本上是DFS就能过.
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