#include <bits/stdc++.h>
using namespace std;
const long long mod = 998244353;
int solve();
int main() {
  ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
  int t = 1;
  if (0) cin >> t;
  while (t--) solve();
}
int solve() {
  int n;
  cin >> n;
  if (n % 10 == 3)
    cout << "bon\n";
  else if (n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8)
    cout << "pon\n";
  else
    cout << "hon\n";
}
