#include <bits/stdc++.h>
using namespace std;
int main() {
  ios ::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n;
  cin >> n;
  if (n % 10 == 3) {
    cout << "bon\n";
  } else if (n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 88) {
    cout << "pon\n";
  } else {
    cout << "hon\n";
  }
  return 0;
}
