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

int main(){
int n;
  cin>>n;
  int a=n%10;
  if(a==2 ||a==4 ||a==5 ||a==7 ||a==9){
cout<<"hon"<<endl;}
    else if(a==1||a==0||a==6||a==8){
cout<<"pon"<endl;}
      else if(a==3){
cout<<"bon"<<endl;}
}