#include <iostream>
#include <random>
#include <ctime>
#include <vector>
#include <set>
#include <list>

using namespace std;

class Animal
{
private:
    int varsta, picioare;
    static int lastId;
public:
    int id;
    Animal()
    {
        id = lastId;
        lastId++;
    }
    Animal(int varsta, int picioare)
    {
        id = lastId;
        lastId++;
        this->varsta = varsta;
        this->picioare = picioare;
    }
    virtual ~Animal()
    {

    }
    virtual void vorbeste()
    {
        cout << "Animalul vorbeste\n";
        cout << "Are varsta " << varsta << "\n";
    }
    static void f()
    {
        cout << "S-a apelat functia f\n";
    }
    bool operator<(const Animal &other) const
    {
        return varsta < other.varsta;
    }
    int getVarsta()
    {
        return varsta;
    }
    int getPicioare()
    {
        return picioare;
    }
};
int Animal::lastId = 0;

class Caine: public Animal
{
private:
    int culoare;
public:
    Caine(int varsta, int picioare, int culoare): Animal(varsta, picioare)
    {
        this->culoare = culoare;
    }
    void vorbeste()
    {
        cout << "Cainele latra\n";
    }
    void seJoaca()
    {
        cout << "Cainele se joaca\n";
    }
};

class Pisica: public Animal
{
public:
    void vorbestte()
    {
        cout << "Pisica miauna\n";
    }
};

int main()
{
    Animal a(5, 4), b(3, 2), c(6, 1);

    set<Animal> s;
    s.insert(a);
    s.insert(b);
    s.insert(c);

    for(auto x:s)
        cout << x.getVarsta() << " ";
    return 0;
}