1public class Main {
2    public static void main(String[] args) {
3        int[][] grid = {
4            {1, 2, 3},
5            {4, 5, 6}
6        };
7        int sum = 0;
8        for (int i = 0; i < grid.length; i++) {
9            sum += grid[i][grid[i].length - 1];
10        }
11        System.out.println(sum);
12    }
13}