摘要: #include<bits/stdc++.h> using namespace std; #define maxn 100005 #define ll long long #define ls l,mid,rt<<1 #define rs mid+1,r,rt<<1|1 typedef pair<i 阅读全文
posted @ 2019-08-19 17:04 Mmasker 阅读(121) 评论(0) 推荐(0)