#include <bits/stdc++.h>
using namespace std;
void solve() {
  int n;
  cin >> n;
  if (n % 10 == 3) cout << "bon" << endl;
  if (n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8)
    cout << "pon" << endl;
  else
    cout << "hon" << endl;
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(nullptr);
  solve();
  return 0;
}
