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