using System;
class Program
{
    static void Main()
    { 
        // declare a jagged array:
        int[][] jagged = new int[3][];
        // set row 0:
        jagged[0] = new int[2];
        jagged[0][0] =8;
        jagged[0][1]= 10;
        // set row 1:
        jagged[1] = new int[9];
        // set row 2:
        jagged[2] = new int[4] {20, 30, 40, 50};
        console.WriteLine("AT row, col 0: "+jagged[2][0]);


    }
}