using System;

public class Program

{

    public static void Main()

    {

        int[] b = new int[100];

        int id = 0;

        for(;id<b.Length; id++)

            Console.WriteLine("{0}",b.Length);

            b[id] = id % 10;

        Console.WriteLine("{0}",b[49]);

        for(id = b.Length -1; id > 0; id--)

            b[id] = b[id-1];

        Console.WriteLine("{0}",b[49]);

    }

}