#include<bits/stdc++.h>
using namespace std;
int n,m,q;
int a[1010][1010],s[1010][1010];
int main(){
	cin>>n>>m>>q;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			cin>>a[i][j];
			s[i][j]=s[i-1][j]+s[i][j-1]-s[i-1][j-1]+a[i][j];
		}
	}
	while(q--){
		int x1,y1,x2,y2;
		scanf("%d %d %d %d",&x1,&y1,&x2,&y2);
		printf("%d\n",s[x2][y2]-s[x2][y1-1]-s[x1-1][y2]+s[x1-1][y1-1]);
	}
	return 0;
}