#include <bits/stdc++.h>
using namespace std;

int main(){
	int n;
	cin>>n;
	n=n%10;
	if(n==2||n==4||n==5||n==7||n==9) cout<<"hon";
	else if(n==0||n==1||n==6||n==8) cout<<"pon";
	else cout<<"bon";
	return 0;
} 