using System;

public class Program

{

    public static void Main()

    {

           int n,i,t=9;

    int sum =0;

    Console.Write("\n\n");

    Console.Write("Display the sum of the series [ 9 + 99 + 999 + 9999 ...]:\n");

    Console.Write("-----------------------------------------------------------");

    Console.Write("\n\n");      

    Console.Write("Input the number or terms :");

    n= Convert.ToInt32(Console.ReadLine());     

    for (i=1;i<=n;i++)

    { sum +=t;

      Console.Write("{0}   ",t);

      t=t*10+9;

    }

    Console.Write("\nThe sum of the saries = {0} \n",sum);

    }

}