#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using db = double;
using pll = pair<ll, ll>;
const int MOD = 1e9 + 7, INF = INT_MAX, N = 1e5 + 10;
int main() {
  ll n;
  cin >> n;
  if (n % 10 == 3) {
    cout << "bon\n";
  } else if (n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8) {
    cout << "pon\n";
  } else {
    cout << "hon\n";
  }
}
