#include <iostream>
#include <ostream>
#include <random>
#include <vector>
 
namespace
{
	std::random_device rd;
	std::mt19937 gen(rd());
	std::uniform_int_distribution<> attack_dist(20, 50);
}
 
class LifeForm
{
protected:
	int level;
	int exp;
	int req_EXP;
	int max_health;
	int health;
 
	LifeForm(int level, int exp, int req_EXP, int max_health)
		: level(level)
		, exp(exp)
		, req_EXP(req_EXP)
		, max_health(max_health)
		, health(max_health)
	{}
 
	void level_up()
	{
		level++;
		exp = 0;
		req_EXP += level * 100;
		max_health += 50 * level;
		health = max_health;
	}
 
public:
	bool health_depleted() const { return health <= 0; }
 
	void attack(LifeForm& attacked_lifeform)
	{
		attacked_lifeform.health -= level * attack_dist(gen);
	}
 
	void add_EXP(LifeForm const& life_form)
	{
		exp += life_form.level * 50;
 
		if (exp >= req_EXP)
		{
			level_up();
		}
	}
 
	friend std::ostream& operator<<(std::ostream& out, LifeForm const& lifeform)
	{
		out << "Level: " << lifeform.level;
		out << "\nHP   : (" << lifeform.health << '/' << lifeform.max_health << ')';
		out << "\nEXP  : (" << lifeform.exp << '/' << lifeform.req_EXP << ')';
		return out;
	}
};
 
class Player : public LifeForm
{
public:
	Player() : LifeForm(1, 0, 100, 200) {}
};
 
class Monster : public LifeForm
{
public:
	Monster() : LifeForm(1, 50, 0, 100) {}
};
 
class Game
{
private:
	Player player;
	std::vector<Monster> monsters;
 
	void battle();
	Monster current_monster() { return monsters.back(); }
	bool all_monsters_dead() const { return monsters.empty(); }
 
public:
	Game();
	void play();
};
 
Game::Game() : monsters(50) {}
 
void Game::play()
{
	std::cout << "Number of monsters: " << monsters.size() << "\n\n";
 
	while (!player.health_depleted() && !monsters.empty())
	{
		std::cout << "\nPlayer\n" << player;
		battle();
 
		if (all_monsters_dead())
		{
			std::cout << "\n\n> All monsters killed!!!";
		}
 
		if (player.health_depleted())
		{
			std::cout << "> Player dead...\n\n";
		}
	}
}
 
void Game::battle()
{
	std::cout << "\n\n> Player attacks!\n";
	player.attack(monsters.back());
 
	if (current_monster().health_depleted())
	{
		std::cout << "> Monster killed!\n";
		player.add_EXP(current_monster());
		monsters.pop_back();
	}
 
	std::cout << "\nMonster " << monsters.size() << "\n" << current_monster();
	std::cout << "\n\n> Monster attacks!\n";
	current_monster().attack(player);
}
 
int main()
{
	Game game;
	game.play();
}

I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8b3N0cmVhbT4KI2luY2x1ZGUgPHJhbmRvbT4KI2luY2x1ZGUgPHZlY3Rvcj4KCm5hbWVzcGFjZQp7CglzdGQ6OnJhbmRvbV9kZXZpY2UgcmQ7CglzdGQ6Om10MTk5MzcgZ2VuKHJkKCkpOwoJc3RkOjp1bmlmb3JtX2ludF9kaXN0cmlidXRpb248PiBhdHRhY2tfZGlzdCgyMCwgNTApOwp9CgpjbGFzcyBMaWZlRm9ybQp7CnByb3RlY3RlZDoKCWludCBsZXZlbDsKCWludCBleHA7CglpbnQgcmVxX0VYUDsKCWludCBtYXhfaGVhbHRoOwoJaW50IGhlYWx0aDsKCglMaWZlRm9ybShpbnQgbGV2ZWwsIGludCBleHAsIGludCByZXFfRVhQLCBpbnQgbWF4X2hlYWx0aCkKCQk6IGxldmVsKGxldmVsKQoJCSwgZXhwKGV4cCkKCQksIHJlcV9FWFAocmVxX0VYUCkKCQksIG1heF9oZWFsdGgobWF4X2hlYWx0aCkKCQksIGhlYWx0aChtYXhfaGVhbHRoKQoJe30KCgl2b2lkIGxldmVsX3VwKCkKCXsKCQlsZXZlbCsrOwoJCWV4cCA9IDA7CgkJcmVxX0VYUCArPSBsZXZlbCAqIDEwMDsKCQltYXhfaGVhbHRoICs9IDUwICogbGV2ZWw7CgkJaGVhbHRoID0gbWF4X2hlYWx0aDsKCX0KCnB1YmxpYzoKCWJvb2wgaGVhbHRoX2RlcGxldGVkKCkgY29uc3QgeyByZXR1cm4gaGVhbHRoIDw9IDA7IH0KCgl2b2lkIGF0dGFjayhMaWZlRm9ybSYgYXR0YWNrZWRfbGlmZWZvcm0pCgl7CgkJYXR0YWNrZWRfbGlmZWZvcm0uaGVhbHRoIC09IGxldmVsICogYXR0YWNrX2Rpc3QoZ2VuKTsKCX0KCgl2b2lkIGFkZF9FWFAoTGlmZUZvcm0gY29uc3QmIGxpZmVfZm9ybSkKCXsKCQlleHAgKz0gbGlmZV9mb3JtLmxldmVsICogNTA7CgoJCWlmIChleHAgPj0gcmVxX0VYUCkKCQl7CgkJCWxldmVsX3VwKCk7CgkJfQoJfQoKCWZyaWVuZCBzdGQ6Om9zdHJlYW0mIG9wZXJhdG9yPDwoc3RkOjpvc3RyZWFtJiBvdXQsIExpZmVGb3JtIGNvbnN0JiBsaWZlZm9ybSkKCXsKCQlvdXQgPDwgIkxldmVsOiAiIDw8IGxpZmVmb3JtLmxldmVsOwoJCW91dCA8PCAiXG5IUCAgIDogKCIgPDwgbGlmZWZvcm0uaGVhbHRoIDw8ICcvJyA8PCBsaWZlZm9ybS5tYXhfaGVhbHRoIDw8ICcpJzsKCQlvdXQgPDwgIlxuRVhQICA6ICgiIDw8IGxpZmVmb3JtLmV4cCA8PCAnLycgPDwgbGlmZWZvcm0ucmVxX0VYUCA8PCAnKSc7CgkJcmV0dXJuIG91dDsKCX0KfTsKCmNsYXNzIFBsYXllciA6IHB1YmxpYyBMaWZlRm9ybQp7CnB1YmxpYzoKCVBsYXllcigpIDogTGlmZUZvcm0oMSwgMCwgMTAwLCAyMDApIHt9Cn07CgpjbGFzcyBNb25zdGVyIDogcHVibGljIExpZmVGb3JtCnsKcHVibGljOgoJTW9uc3RlcigpIDogTGlmZUZvcm0oMSwgNTAsIDAsIDEwMCkge30KfTsKCmNsYXNzIEdhbWUKewpwcml2YXRlOgoJUGxheWVyIHBsYXllcjsKCXN0ZDo6dmVjdG9yPE1vbnN0ZXI+IG1vbnN0ZXJzOwoKCXZvaWQgYmF0dGxlKCk7CglNb25zdGVyIGN1cnJlbnRfbW9uc3RlcigpIHsgcmV0dXJuIG1vbnN0ZXJzLmJhY2soKTsgfQoJYm9vbCBhbGxfbW9uc3RlcnNfZGVhZCgpIGNvbnN0IHsgcmV0dXJuIG1vbnN0ZXJzLmVtcHR5KCk7IH0KCnB1YmxpYzoKCUdhbWUoKTsKCXZvaWQgcGxheSgpOwp9OwoKR2FtZTo6R2FtZSgpIDogbW9uc3RlcnMoNTApIHt9Cgp2b2lkIEdhbWU6OnBsYXkoKQp7CglzdGQ6OmNvdXQgPDwgIk51bWJlciBvZiBtb25zdGVyczogIiA8PCBtb25zdGVycy5zaXplKCkgPDwgIlxuXG4iOwoJCgl3aGlsZSAoIXBsYXllci5oZWFsdGhfZGVwbGV0ZWQoKSAmJiAhbW9uc3RlcnMuZW1wdHkoKSkKCXsKCQlzdGQ6OmNvdXQgPDwgIlxuUGxheWVyXG4iIDw8IHBsYXllcjsKCQliYXR0bGUoKTsKCQoJCWlmIChhbGxfbW9uc3RlcnNfZGVhZCgpKQoJCXsKCQkJc3RkOjpjb3V0IDw8ICJcblxuPiBBbGwgbW9uc3RlcnMga2lsbGVkISEhIjsKCQl9CgoJCWlmIChwbGF5ZXIuaGVhbHRoX2RlcGxldGVkKCkpCgkJewoJCQlzdGQ6OmNvdXQgPDwgIj4gUGxheWVyIGRlYWQuLi5cblxuIjsKCQl9Cgl9Cn0KCnZvaWQgR2FtZTo6YmF0dGxlKCkKewoJc3RkOjpjb3V0IDw8ICJcblxuPiBQbGF5ZXIgYXR0YWNrcyFcbiI7CglwbGF5ZXIuYXR0YWNrKG1vbnN0ZXJzLmJhY2soKSk7CgoJaWYgKGN1cnJlbnRfbW9uc3RlcigpLmhlYWx0aF9kZXBsZXRlZCgpKQoJewoJCXN0ZDo6Y291dCA8PCAiPiBNb25zdGVyIGtpbGxlZCFcbiI7CgkJcGxheWVyLmFkZF9FWFAoY3VycmVudF9tb25zdGVyKCkpOwoJCW1vbnN0ZXJzLnBvcF9iYWNrKCk7Cgl9CgoJc3RkOjpjb3V0IDw8ICJcbk1vbnN0ZXIgIiA8PCBtb25zdGVycy5zaXplKCkgPDwgIlxuIiA8PCBjdXJyZW50X21vbnN0ZXIoKTsKCXN0ZDo6Y291dCA8PCAiXG5cbj4gTW9uc3RlciBhdHRhY2tzIVxuIjsKCWN1cnJlbnRfbW9uc3RlcigpLmF0dGFjayhwbGF5ZXIpOwp9CgppbnQgbWFpbigpCnsKCUdhbWUgZ2FtZTsKCWdhbWUucGxheSgpOwp9