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Re:发现还需要判断给的墙是不是多余的

Posted by than at 2012-10-16 09:40:56 on Problem 1024 and last updated at 2012-10-16 10:15:39
In Reply To:为什么要把original problem修改为简单判断对错? Posted by:than at 2012-10-12 23:15:59
发现还需要判断给的墙是不是多余的

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