class Armstrong
{
    public static void main(String[] args)
       {
          int num=Integer.parseInt(args[0]);
          int rem,sum=0,no;
          no=num;
          while(no!=0)
            {
               rem=no%10;
               sum+=rem*rem*rem;
               no/=10;      
            }
          if(sum==num)
              System.out.println(num+" is an Armstrong number");
          else
              System.out.println(num+" is not an Armstrong number");    
       } 
}