#include <stdio.h>

int cal(int n){
    int sum=0;
    while(n>0){
        int d = n%10;
        sum += d * d;
        n/=10;
    }
    return sum;
}

int main(){
    int n, sum;
    scanf("%d",&n);
    
    while(n!=1){
        n=cal(n);
    }
    
    if(n==1){
        printf("Happy number\n");
    }
    else{
        printf("Not a happy number\n");
    }

}