include <bits/stdc++.h>

using namespace std; int a[10001][10001],s[10001][10001];

int main(){

int n,m,q,x1,x2,y1,y2;
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];
	}
}
for(int i=1;i<=q;i++){
	cin>>x1>>y1>>x2>>y2;
	cout<<s[x2][y2]-s[x1-1][y2]-s[x2][y1-1]+s[x1-1][y1-1]<<endl;
}

return 0;

}