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