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Re:实际上就是对y按递增排序,y相等则按x递减排序,然后求x的逆序数,可以用归并解决了。

Posted by Thank_you at 2007-08-15 10:20:58 on Problem 1794
In Reply To:这题是什么思路来着!!! Posted by:ecjtubaowp at 2007-06-11 17:02:59


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