#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;
using vi = vector<int>;
using vvi = vector<vi>;
int main() {
  int n;
  string s = "";
  cin >> n;
  if (n % 10 == 3) {
    s = "bon";
  }
  if (n % 10 == 2 | n % 10 == 4 | n % 10 == 5 | n % 10 == 7 | n % 10 == 9) {
    s = "hon";
  } else
    s = "pon";
  cout << s << endl;
}
