#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  scanf("%d", &N);
  if (N % 10 == 2 && N % 10 == 4 && N % 10 == 5 && N % 10 == 9 && N % 10 == 9) {
    cout << "hon" << endl;
  } else if (N % 10 == 0 && N % 10 == 1 && N % 10 == 6 && N % 10 == 8) {
    cout << "pon" << endl;
  } else if (N % 10 == 3) {
    cout << "bon" << endl;
  }
}
