#include <bits/stdc++.h>
using namespace std;
void FAST() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
}
int main() {
  FAST();
  int n;
  cin >> n;
  n %= 10;
  if (n == 3) {
    cout << "bon\n";
  }
  if (n == 0 || n == 1 || n == 6 || n == 8) {
    cout << "pon\n";
  } else {
    cout << "hon\n";
  }
}
