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

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