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there is exactly one path between any two free blocks.In Reply To:AC了的，看看这组数据结果什么？ Posted by:xiaoyaoxia at 2009-08-19 08:55:02 > 3 3 > .#. > .#. > #.. > 怎么几个AC了的程序，测试的结果不一样也能AC？纳闷！ Followed by:
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