#include<iostream>
using namespace std;
int main(){
	int n,a;
	cin>>n;
	a=n%10;
	if(a==2 || a==4 || a==5 || a==7 || a=9){
		cout<<"hon"<<endl;
	}else if(a==0 || a==1 || a==6 || a==8){
		cout<<"pon"<<endl;
	}else{
		cout<<"bon"<<endl;
	}
	return 0;
}