using System;  

public class Exercise26  

{  

    public static void Main()

{

  int n,i,sum=0;

  int t=1; 

  Console.Write("Input the numbe of terms : ");

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

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

  {

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

     sum=sum+t;

     t=(t*10)+1;

  }

  Console.Write("\nThe Sum is : {0}\n",sum);

   }

}