#include<iostream>
using namespace std;
int main(){
int N;
cin>>N;
int t=N%10;
  if(t==2||t==4||t==5||t==7||t==9)
    cout<<"hon";
  else if(t==0||t==1||t==6||t==8)
    cout<<"pon";
  else
    cout<<"bon";
}
