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Re:弱弱的问一下,为什么这题就必须用二分,而用BFS或者DFS就错呢?

Posted by walkbird at 2012-02-21 16:22:13 on Problem 2446 and last updated at 2012-02-21 16:24:42
In Reply To:弱弱的问一下,为什么这题就必须用二分,而用BFS或者DFS就错呢? Posted by:tytzyl at 2009-03-31 15:45:33
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注意这样的情况

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