#include <bits/stdc++.h>
using namespace std;
int main() {
  int n_int;
  std::string n;
  cin >> n_int;
  n = std::to_string(n_int);
  int size = n.size();
  std::string out = "hon";
  if (n[size] == '0') {
    out = "pon";
  } else if (n[size] == '1') {
    out = "pon";
  } else if (n[size] == '6') {
    out = "pon";
  } else if (n[size] == '8') {
    out = "pon";
  } else if (n[size] == '3') {
    out = "bon";
  }
  cout << out << "\n";
}
