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

int main() {
  int N;
  cin >> N;
  if (N % 10 == 3) {
    cout << "bon" << endl;
  }
  else if (N % 10 == 0) {
    cout << "pon" << endl;
  }
  else if (N % 10 == 1) {
    cout << "pon" << endl;
  }
  else if (N % 10 == 6) {
    cout << "pon" << endl;
  }
  else if (N % 10 == 8) {
    cout << "pon" << endl;
  }
  else {
    cout << "hon" << endl;
  }
}