#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";
  else if(r==3)cout<<"bon";
  else cout<<"pon";
  return 0;
}