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