#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int x = n % 10;
  if (x == 2 || x == 4 || x == 7 || x == 9 || x == 5)
    cout << "jon";
  else if (x == 3)
    cout << "bon";
  else
    cout << "pon";
  return 0;
}
