#include<bits/stdc++.h>
using namespace std;
int n;
int main() 
{
	cin>>n;
	n%=10;
	if(n==3) cout<<"bon"<<endl;
	else if(n==0||n==1||n==6||n==8) cout<<"pon"<<endl;
	else cout<<"hon"<<endl;
	return 0;
}