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用距离和

Posted by backstreetlili at 2008-06-06 00:08:01 on Problem 1175 and last updated at 2008-06-06 00:08:22
In Reply To:谁能提供一个能区别图形的hash函数 ？ Posted by:backstreetlili at 2008-06-05 20:57:02 
哈哈，，我的 ac 了，可以用cluster 里所有点对之间的距离和做hash 函数，精度 8 为就够了，但用距离的平方的和不行。
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