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