随笔分类 -  并查集

so easy（并查集+unordered_map）
摘要：There are nn points in an array with index from 11 to nn, and there are two operations to those points. 1: 1 \ x1 x marking the point xx is not availa 阅读全文
posted @ 2019-09-09 17:36 晴天要下雨 阅读(178) 评论(0) 推荐(0)