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新人请教

Posted by dalang0407 at 2010-05-26 15:47:07 on Problem 1753
我是新人 想请教一下 大家说这个题要枚举+BFS
具体的思想是怎么样呢?想不明白啊 把什么看成是图啊?是棋盘吗?不明白。。。
各位大牛说一下啊 谢谢了

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