摘要: A. Wonderful Permutation You are given a permutation p1,p2,…,pnp1,p2,…,pn of length nn and a positive integer k≤nk≤n. In one operation you can choose 阅读全文
posted @ 2022-08-14 00:50 cbmango 阅读(242) 评论(0) 推荐(0)