#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int j = n % 10;
  if (j == 0 || j == 1 || j == 6 || j == 8) {
    cout << 'pon' << endl;
  } else if (j == 3) {
    cout << 'bon' << endl;
  } else {
    cout << 'hon' << endl;
  }
  return 0;
}
