#include <bits/stdc++.h>
using namespace std;
int main(void) {
  int N;
  cin >> N;
  string ans;
  if (N % 10 == 3)
    ans = "bon";
  else if (N % 10 == 0 && N % 10 == 1 && N % 10 == 6 && N % 10 == 8)
    ans = "pon";
  else
    ans = "hon";
  cout << ans << endl;
}
