#include <bits/stdc++.h>
using namespace std;
int main(void){
    // Your code here!
 int n;
 cin >> n;
 n%=10;
 if(n==3)
 cout << "bon";
 else if(n<=1 || n==6 || n==8)
 cout << "pon";
 else
 cout << "hon";
 return 0
}