2014年7月26日
hdu 2583 permutation 动态规划
摘要： Problem Description Permutation plays a very important role in Combinatorics. For example ,1 2 3 4 5 and 1 3 5 4 2 are both 5-permutations. As everyon 阅读全文
posted @ 2014-07-26 10:23 _璀璨星空 阅读(423) 评论(0) 推荐(0) 编辑