#include <iostream>

int counter1 = 0;
class C {
    int c = counter1++;
public:
    C() {
        std::cout << "constructor C() " << c << "\n";
    }

    C(const C& other) {
        std::cout << "constructor C(const C&) " << c << "\n";
    }

    C(C&& other) {
        std::cout << "constructor C(const C&&) " << c << "\n";
    }

    C& operator = (const C& other) {
        std::cout << "operator = (const C&) " << "\n";
        return *this;
    }

    C& operator = (C&& other) {
        std::cout << "operator = (const C&&)\n";
        return *this;
    }

    ~C() {
        std::cout << "destructor C() " << c << "\n";
    }
};

int counter2 = 0;
class D {
private:
    C c1;
    const C& c2;
    const C* c3;
    int c = counter2++;

public:
    D(const C& arg1, const C& arg2, const C* arg3) :
        c1(arg1),
        c2(arg2),
        c3(arg3) {
        std::cout << "constructor D(const C&, const C&, const C*) " << c << "\n";
    }

    ~D() {
        std::cout << "destructor D() " << c << "\n";
    }
};