using System;

public class Program

{

    public static void Main()

    {

        string num = ("num");

        num += "";

        Console.WriteLine(num);

        int m = 5;

        for (int counter=0 ; counter < m; counter++)

        {

            num = num + Convert.ToString(counter);

            Console.WriteLine(num);

            num = "num";

        }

    }

}