#include <iostream>
using namespace std;

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;
}
