#include <iostream>
#include <iomanip>
#include <fstream>
#include <sstream>
#include <cctype>
#include <vector>
#include <algorithm>

using namespace std;

class Phone_Number
{
public:
  Phone_Number(string nr) : country(), number()
  {
    string::iterator it = nr.begin();
    while ( it != nr.end() )
    {
      if ( *it == '+' || isdigit(*it) )
        ++it;
      else
        it = nr.erase(it);
    }
    if ( nr.at(0) == '+' )
    {
      country = nr.substr(1,2);
      nr = nr.substr(3);
    }
    number = nr;
  }
  
  bool operator==(Phone_Number const& other) const
  {
    if ( country.size() == 0 || other.country.size() == 0 )
      return number == other.number;
    else
      return country == other.country && number == other.number;
  }

  void print() { cout << country << ":" << number << endl; }
    
private:
  string country;
  string number;
};

int main()
{
  ifstream ifs("../given_files/do_not_answer.txt");

  if ( ! ifs )
  {
    cerr << "Error: blocklist could not be opened." << endl;
    return 1;
  }

  vector<Phone_Number> v;
  string number;
  
  while ( getline( ifs, number) )
  {
    v.push_back( Phone_Number(number) );
  }

  cout << "Enter one phone number per line (finish by Ctrl-D):"
       << endl;

  while ( getline(cin, number) )
  {
    if ( find(v.cbegin(), v.cend(), number) == v.end() )
      cout << "This might be okay" << endl;
    else
      cout << "Blocked." << endl;
  }
  
  return 0;
}