using System;

public class Program

{

    public static void Main()

    {

        int a,sum=0;

        Console.WriteLine("Enter num");

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

        int num = n;

        while(n>0)

        {

            a=n%10;

            sum=sum+a*a*a;

            n=n/10;

        }

        if(sum==num)

        {

                Console.WriteLine("armstrong num");

        }

        else

            Console.WriteLine("Not");

    }

}