using System;

​

public class Program

{

    public static void Main()

    {

        int i = 5, input = 0;

        while (i > 0)

        {

            input *= 10;

            input += i--;

        }

​

        while (input > 10)

        {

            Console.WriteLine(input);

            input /= 10;

        }

​

        while (input > 0)

        {

            Console.WriteLine(input--);

        }

    }

}