摘要: "题目" 题目大意 给你一个图,你要自己生成一个新的图,满足对于任意$x include include include define N 200010 define mo 998244353 define ll long long int n,m; struct Node{ Node l, r; 阅读全文
posted @ 2019-10-26 16:59 jz_597 阅读(252) 评论(0) 推荐(0) 编辑