#include <iostream>
using namespace std;
 
const int MAX_SIZE = 10;
 
int main() {
	int colSize, lineSize, mt[MAX_SIZE + 1][MAX_SIZE + 1];
	cin >> colSize >> lineSize;
	for (int line = 1; line <= colSize; ++line) {
		for (int col = 1; col <= lineSize; ++col) {
			cin >> mt[line][col];
		}
	}
	int xBegin, yBegin, xEnd, yEnd;
	cin >> xBegin >> yBegin >> xEnd >> yEnd;
	int sum = 0;
	for (int line = xBegin; line <= xEnd; ++line) {
		for (int col = yBegin; col <= yEnd; ++col) {
			sum += mt[line][col];
			//cout << "line = " << line << " col = " << col << " sum = " << sum << endl;
		}
	}
	cout << sum *-sum;
	return 0;
}

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MiAxCjI1CjUwCjEgMSAxIDEK

2 1
25
50
1 1 1 1