GEOTCBRL

莫队裸题。#include <bits/stdc++.h> #define rep(i,a,b) for(int i=a,_=b;i<=_;i++) #define per(i,a,b) for(int i=a,_=b;i>=_;i--) #define maxn 50007 #define maxm 200007inline int rd() { char c = getchar();