#include <bits/stdc++.h>
using namespace std;
const int INF = 1e9;
const int MOD = 1e9 + 7;
const long long LINF = 1e18;
int main() {
  int n;
  cin >> n;
  if (n >= 100)
    n %= 100;
  else if (n >= 10)
    n %= 10;
  if (n == 2 || n == 4 || n == 5 || n == 7 || n == 9)
    cout << ("hon") << "\n";
  else if (n == 0 || n == 1 || n == 6 || n == 8)
    cout << ("pon") << "\n";
  else
    cout << ("bon") << "\n";
  return 0;
}
