题目描述

#include<iostream>
using namespace std;
int map[1005][1005],s[1005][1005];
int n,m,q;
int x1,x2,y1,y2;
int main(){
    cin>>n>>m>>q;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            cin>>map[i][j];
            s[i][j]=s[i][j-1]+s[i-1][j]-s[i-1][j-1]+map[i][j];
        }
    }
    while(q--){
        cin>>x1>>y1>>x2>>y2;
        cout<<s[x2][y2]+s[x1-1][y1-1]-s[x1-1][y2]-s[x2][y1-1]<<endl;
    }
    return 0;
}