#include<bits/stdc++.h>
using namespace std;
int n,m,k,a[1001][1001],b[1001][1001],sx0,sy0,sx1,sy1;
int main(){
	scanf("%d%d%d",&n,&m,&k);
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			scanf("%d",&a[i][j]);
			b[i][j]=b[i-1][j]+b[i][j-1]-b[i-1][j-1]+a[i][j];
		}
	}
	while(k--){
		scanf("%d%d%d%d",&sx0,&sy0,&sx1,&sy1);
		printf("%d/n",b[sx1][sy1]-b[sx1][sy0-1]-b[sy1][sx0-1]+b[sx0-1][sy0-1]);
	}
	return 0;
}

/**************************************************************
	Problem: 2061
	User: linyifan
	Language: C++
	Result: Wrong Answer
****************************************************************/