摘要：
#include<iostream> #include<iomanip> #include<cstdio> #include<vector> #include<cmath> #include<string> #include<cstring> #include<algorithm> #include 阅读全文
摘要：
#include<bits/stdc++.h> #define fi first #define se second #define lo (o<<1) #define ro (o<<1|1) #define mid (l+r>>1) using namespace std; typedef lon 阅读全文