import java.util.*;
class Armstrong_No
{
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
System.out.println("Enter a number");
int n=sc.nextInt();
int copy=n,s=0;
while(n!=0)
{
int d=n%10;
s=s+(d*d*d);
n=n/10;
}
if(copy==s)
System.out.println("Armstrong Number");
else
System.out.println("Not an Armstrong Number");
}
}