2012年10月28日

hdu 3664

摘要： Permutation CountingTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 912 Accepted Submission(s): 456Problem DescriptionGiven a permutation a1, a2, … aN of {1, 2, …, N}, we define its E-value as the amount of elements where ai > i. For example, t 阅读全文

posted @ 2012-10-28 22:14 yumao 阅读(206) 评论(0) 推荐(0)

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