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

int main() {
  int N;
  cin >> N;
  
  if(N % 10 == 2 || N % 10 == 4 || N % 10 == 5 || N % 10 == 7 || N % 10 == 9){
    cout << "hon" << endl;
  } else if(N % 10 = 0 || N % 10 = 1 || N % 10 = 6 || N % 10 = 8){
    cout << "pon" <<endl;
  } else {
    cout << "bon" << endl;
}
