min_ and max_ of the same size as the grid to store the minimum and maximum sums respectively.min_ and max_ to the value of the first cell in the grid (0 or 1).min_ and max_ matrices with cumulative sums.(i, j) not in the first row or column, calculate the minimum and maximum sums by taking the minimum and maximum of the sums from the cell above (i-1, j) and to the left (i, j-1) and adding the current cell's value.(rows + cols - 1) // 2 is between the minimum and maximum sums at the bottom-right cell (rows - 1, cols - 1).True if the target sum is within the range, otherwise return False.