#include <iostream>
#include <math.h>

using namespace std;
// for find how many values for root;
int div(int a){
    int n=0;
    while (a!=0)
    {
        int d=a%10;
        a/=10;
        n++;
    }
    return n;
    
}
//for sum of the digit
int sum(int a){
    int sum=0;
    int n=a;
    while (a!=0)
    {
        int d=a%10;
        sum+=pow(d,div(n));
        a/=10;
    }
    return sum;
}
//main function
int main(){
    
    
    int a;
    cin>>a;
    int n=a;
    
    
    if(sum(a)==n){
        cout<<"Armstrong number";
    }
    else{
        cout<<"Not a Armstrong number";
    }


    
        
    
}