#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int,int>;

int main(){
    string n;
  cin >> n;
  if(n.size() == 1){
  if(n == '3') cout << "bon" << endl;
  else if (n == '0' || n == '1' || n == '6' || n== '8') cout << "pon" << endl;
  else cout << "hon" << endl;
  }
  else if(n.size() == 2){
      if(n.at(1) == '3') cout << "bon" << endl;
      else if (n.at(1) == '0' || n.at(1) == '1' || n.at(1) == '6' || n.at(1)== '8') cout << "pon" << endl;
      else cout << "hon" << endl;
  }
  else {
      if(n.at(2) == 3) cout << "bon" << endl;
      else if (n.at(2) == '0' || n.at(2) == '1' || n.at(2) == '6' || n.at(2)== '8') cout << "pon" << endl;
      else cout << "hon" << endl;
  }
}