#include<stdio.h>
#include<math.h>
int main()
{
    int n;
    scanf("%d",&n);
    if(n<0)
    {
        printf("Ivalid Input");
    }
    else
    {
        int originalNum = n;
        int numDigits = 0;
        int temp = n;
        if (temp ==0)
        {
            numDigits = 1;
        }
        else
        {
            while(temp >0)
            {
                temp/=10;
                numDigits++;
            }
        }
        int sumofpowers =0;
        temp =n;
        while (temp > 0)
        {
            int digit = temp %10;
            sumofpowers +=pow(digit,numDigits);
            temp /=10;
        }
        if(sumofpowers ==originalnum)
        {
            printf("Armstrong\n");
        }else
        {
            printf("Not armstrong\n");
        }
    }
    rerurn 0;
        
        }
    }