#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  while (n > 10) {
    if (n > 99) {
      n -= 100;
    } else {
      n -= 10;
    }
  }
  if (n == 3) {
    cout << "bon";
  } else if (n == 0 || n == 1 || n == 6 || n == 8) {
    cout << "pon";
  } else {
    cout << "hon";
  }
}
