#include<bits/stdc++.h>
using namespace std;
int main()
{
  int n;
  cin>>n;
  int r=n%10;
  if(r==2||r==4||r==5||r==7||r==9)
  {
    cout<<"hon";
  }
  if(r==0||r==1||r==6||r==8)
  {
    cout<<"pon";
  }
  if(r==3)
  {
    cout<"bon";
  }
  return 0;
}