class InvalidCodeException extends Exception {
  public InvalidCodeException(String s) {
    super(s);
  }
}

class PhoneRepository {
  public static String getCountryName(String countryCode) throws InvalidCodeException {
    int code  = Integer.parseInt(countryCode);

    if (code >= 90 && code <= 100) {
      return "India";
    } else  if (code == 901) {
      return "US";
    } else {
      throw new InvalidCodeException("No country with the given code found");
    }
  }
}

class Client {
  public static String getCountry(String countryCode) throws InvalidCodeException {
    if (countryCode.length() > 3 || countryCode.length() < 2) {
      throw new InvalidCodeException("Invalid code detail found");
    } else {
      return PhoneRepository.getCountryName(countryCode);
    }
  }
}

public class Source1 {

  public static void main(String[] args) {

  }
}