using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter Number");

        int n = int.Parse(Console.ReadLine());

          double inv = 0;

        int p = 1;

        while(n > 0){

            int pow = n % 10;

            n = n / 10;

            inv= inv + p * Math.Pow(10, pow - 1);

            p++;

        }

        Console.Write(inv);

    }

}