#include <bits/stdc++.h>
using namespace std;
int main() {
  long N, M, X, max = 0, cnt = 0;
  cin >> N;
  M = N % 10;
  if (N == 3) {
    cout << "bon";
  } else if (N == 0 || N == 1 || N == 6 || N == 8) {
    cout << "pon";
  } else {
    cout << "hon";
  }
}
