Классы, Кузичкин 141 группа

#include <iostream>

using namespace std;

class Boss
{
private:
  string name;
  int health;
  bool isFinal;
  string abilities;
public:
  static int countFinal, countNotFinal;

  bool isCorrect()
  {
    if (health >= 1e5 && health <= 1e7) return true;
    return false;
  }

  Boss() == default;

  Boss(const Boss& b)
  {
    this->name = b.name;
    this->health = b.health;
    this->isFinal = b.isFinal;
    this->abilities = b.abilities;
  }

  Boss(string name, int health, bool isFinal, string abilities)
  {
    if (isFinal) countFinal++;
    else countNotFinal++;

    this->name = name;
    if (isCorrect()) this->health = health;
    else this->health = 1e5;
    this->isFinal = isFinal;
    this->abilities = abilities;
  }

  void setName(string name)
  {
    this->name = name;
  }

  void setHealth(int health)
  {
    this->health = health;
  }

  void setIsFinal(bool isFinal)
  {
    if (isFinal) countFinal++;
    else countNotFinal++;
    this->isFinal = isFinal;
  }

  void setAbilities(string abilities)
  {
    this->abilities = abilities;
  }

  friend bool operator==(const Boss& b)
  {
    if (this->isFinal() && b.isFinal() || !this->isFinal() && !b.isFinal())
    {
      if (this->health == b.health)
      {
        if (this->abilities.length() == b.abilities.length())
        {
          return true;
        }
      }
    }
    return false;
  }

  friend bool operator<(const Boss& b)
  {
    if (!this->isFinal && b.isFinal) return true;
    else if ((this->isFinal && b.isFinal || !this->isFinal && !b.isFinal) && this->health < b.health) return true;
    else if (this->health == b.health && this->abilities.length() < b.abilities.length()) return true;
    return false;
  }

  friend ostream& operator<<(ostream& out, const Boss& b)
  {
    out << b.name << " " << b.health << " " << (b.isFinal ? "true" : "false") << endl;
    out << b.abilities << endl << endl;
  }
};

int Boss::countFinal = 0, Boss::countNotFinal = 0;

int main()
{
  string name, abilities;
  int health;
  bool isFinal;
  Boss b1("pasha", 1e7 - 23, true, "he's very strong"), b2(b1);
  Boss b3("rauf", 1e7 + 1000, false, "he's trying to cheat with health.");
  cout << (b1 == b2) << " " << (b1 < b2) << " " << (b2 < b3) << " " << (b1 == b3);
  cout << Boss::countFinal << " " << Boss:countNotFinal;
  cout << b1 << b2 << b3;
  return 0;
}