摘要: H. Permutation Counting 2022/7/28 传送门:https://codeforces.com/group/5zHJ4CTyoU/contest/392060/problem/H 图上计数,判环,拓扑。 题意:求n个数排列的方案数,满足m个限制条件:$P_{x_i}<P_{ 阅读全文
posted @ 2022-07-28 18:16 wtn135687 阅读(56) 评论(0) 推荐(0)
摘要: F. K-th Power 传送门: 牛客:https://ac.nowcoder.com/acm/contest/34866/F cf:https://codeforces.com/group/5zHJ4CTyoU/contest/392060/problem/F 题意:求区间[l,r]中,不含有 阅读全文
posted @ 2022-07-28 17:56 wtn135687 阅读(60) 评论(0) 推荐(0)