/*#include <stdio.h>
#include <stdlib.h>

int main() {
int n;
scanf("%d",&n);

int *arr=(int*)malloc(n*sizeof(int));

if(arr==NULL){
    printf("Memory not Allocated");
    return 0;
}
for(int i=0;i<n;i++){
    scanf("%d",arr+i);
}
for(int i=0;i<n;i++){
    printf("%d ",*(arr+i));
}
return 0;
}
____________

#include <stdio.h>
#include <stdlib.h>

int main() {
int n;
scanf("%d",&n);
int f1=0,f2=1,f3;
printf("%d %d ",f1,f2);
for(int i=0;i<n;i++){
    f3=f1+f2;
    f1=f2;
    f2=f3;
    printf("%d ",f3);
}
return 0;
}
____________

#include <stdio.h>
#include <stdlib.h>
int main() {
int A,B;
scanf("%d %d",&A,&B);
int f1=0,f2=1,f3;
int count=0,index=1;
while(1){
    f3=f1+f2;
    f1=f2;
    f2=f3;
    index++;
    
    
    if(f3%A==0) count++;
    if(count==B){
        printf("%d->%d",index,f3);
        break;
    }
}
return 0;
}
*/
#include <stdio.h>
int main() {
int n,temp,rem;
int sum=0;
scanf("%d",&n);
temp=n;
while(temp>0){
    rem=temp%10;
    sum+=rem*rem*rem*rem;
temp=temp/10;
}
if(sum==n){
printf("Amstrong Number");
else
printf("Not an Amstrong Number");
}
return 0;
}