#include<iostream>
using namespace std;
int main()
{
	int n;
	cin>>n;
	n%=10;
	if(n==2||n==4||n==5||n==7||n==9)
	 cout<<"hon"<<endl;
	else if(n==3)
	 cout<<"bon"<<endl;
	else
	 cout<<"pon"<<endl;
	return 0;
}