using System;

public class Program

{

    public static void Main()

    {

        var x = 123456789;

        var y = 0;

        while(x > 0){

            var r = (x % 10);   

            x = (x - (x%10)) / 10;

            y = y*10 + r;

        }

        Console.WriteLine(y);

    }

}