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不知逆序数如何得出结果的请进……

Posted by 2008022118 at 2010-03-03 22:26:58 on Problem 2188 and last updated at 2010-03-03 22:28:46
输入的是绳子的编号wire ID,而不是上(或下)挂钩对应下(或上)挂钩的编号。
所以要转换编号,转换成挂钩的顺序,然后再求逆序数。

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