#include <bits/stdc++.h>
using namespace std;

int main() {
  int N;
  cin >> N;;
  
  N = N%10;
  
  if(N=2||N=4||N=5||N=7||N=9)
    cout << "hon" << endl;
  else if(N=3)
    cout << "bon" << endl;
  else
    cout << "pon" << endl;
}
