#include <iostream>

class Rabbit{
	enum Colour{BLACK,WHITE,BROWN,GRAY};
	Rabbit();
	Rabbit(int months, Colour fur);
	int getAge() const;
	friend bool operator!=(const Rabbit&, const Rabbit&);
	friend const Rabbit operator+(const Rabbit& r1, const Rabbit& r2);
	friend Rabbit* operator*(const Rabbit& r, int n);
	
private:
	int age;
	Colour colour;
};

Rabbit::Rabbit(){
	
	age = 0;
	colour = WHITE;
	
}
Rabbit::Rabbit(int months, Colour fur){
	if(months < 0){
		std::cout << "Error";
		exit(1);
	}
	age = months;
	colour = fur;
	
}

int Rabbit::getAge() const{
	return age;
}
bool operator !=(const Rabbit& r1, const Rabbit& r2){
	
	return((r1.colour != r2.colour) || (r1.age != r2.age));
	
}

const Rabbit operator+(const Rabbit& r1,const Rabbit& r2){
	
	if(r1.colour == r2.colour)
		return Rabbit(0,r1.colour);
	else
		return Rabbit(); //or return Rabbit(0,WHITE);
	
}

Rabbit* operator*(const Rabbit& r, int n){
	
	Rabbit* A = new Rabbit[n];
	for(int i = 0; i < n; i++){
		A[i].age = r.age;
		A[i].colour = r.colour;
	}
	
	return A;
	
}

int* everyOther(int* A, int& n){
	
	if(n == 0)
		return A; //or null or nullptr
	if(n == 1){
		delete[] A;
		n = 0;
		return NULL; //or nullptr
	}
	n = n/2;
	int * B = new int[n];
	for(int i = 0; i < n; i++){
		B[i] = A[2*i];
	}
	delete[] A;
	return B;
	
}

int main () {
	
	
	return 0;
}