#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  string x;
  cin >> x;
  if (x[x.size() - 1] == '3') {
    cout << "bon";
    return 0;
  } else if (x[x.size() - 1] == '0' || x[x.size() - 1] == '1' ||
             x[x.size() - 1] == '6' || x[x.size() - 1] == '8') {
    cout << "pon";
  } else {
    cout << "hon";
  }
}
