2019年1月7日
Record of coding:Codeforces 1093E
摘要： E. Intersection of Permutations You are given two permutations a and b, both consisting of n elements. Permutation of nn elements is such a integer se 阅读全文
posted @ 2019-01-07 16:25 akonoh 阅读(274) 评论(0) 推荐(0) 编辑