#include<stdio.h>
#include<math.h>
int isArmstrong(int n){
    if(n < 0) {
        return -1;
    }
    int original_n = n;
    int temp = n;
    int digit = 0;
    do {
        temp /= 10; 
        digit++;
    }
    while(temp != 0);
    long long sum = 0;
    temp = n;
    while(temp != 0);{
        int remainder =temp % 10;
        sum += (long long)pow(remainder,digit);
        temp /= 10;
    }
    if(sum == original_n){
        return 1;
    } else {
        return 0;
    }
}
int main() {
    int n;
    if(scanf("%d",&n) != 1){
        printf("Invalid Input\n");
        return 1;
    }
    int result = isrmstrong(n);
    if(result == -1){
        printf("Invalid Input \n");
    } else if(result == 1) {
        printf("Armstrong\n");
    }
    return 0;
}

    }
}