public static void getMaxRectangleSum() {
		int ROWS = rows, COLS = cols;
		for (int i = 0; i < COLS; i++)
			for (int j = 0; j < ROWS; j++)
				comp[j][i + 1] = m[j][i] + comp[j][i];
		for (left = 1; left <= COLS; left++) 
			for (right = left; right <= COLS; right++) 
				kadane();
	}