#include<iostream>
using namespace std;
int main()
{
	int m,n,a[200005],sum=0;
	cin>>n;
	m=n%10;
	if(m==2||m==4||m==5||m==7||m==9)cout<<"hon";
	if(m==0||m==1||m==6||m==8)cout<<"pon";
	if(m==3)cout<<"bon";
}