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此题类似2644!

Posted by acm_test at 2009-06-19 22:22:23 on Problem 2046
用A*+hash判重,但是A*的估价函数很重要,影响效率和准确性,
开始me的估价是所有不在自己位置上的card总和,但样例都过不了,
改成总和/2, 就可以了,想想也确实如此。。。
以此纪念!

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