#include <bits/stdc++.h>
using namespace std;

int main() {
  int N; cin >>N;
  int i = N % 10;
  string ans = "hon";
  if (i == 3) ans = "bon";
  else (i == 0 || i == 1 || i == 6 || i == 8) ans = "pon";
  cout << ans << endl;

  return 0;
}
