#include<bits/stdc++.h>
using namespace std;
#define ll long long int
 
int main(){
  ll n;
  cin>>n;
  ll x=n%10;
  if(x==2 || x==4 || x==5 || x==7 || x==9)
        cout<<"hon"<<endl;
  else if(x==0 || x==1 || x==6 || x==8)
        cout<<"pon"<<endl;
  else
        cout<<"bon"<<endl;
  return 0;
}