int main(){
	int n;
	cin >> n;
	if(n%10 == 3){
		cout << "bon" << endl;
	}else if(n%10 == 0 || n%10 == 1 || n%10 == 6 || n%10 == 8){
		cout << "pon" << endl;
	}else{
		cout << "hon" << endl;
	}
	return 0;
}
