#include <iostream>
#include <memory>

using namespace std;

class Coffee {
public:
    virtual void make() = 0;
    virtual ~Coffee() = default;
};


class SimpleCoffee : public Coffee {
public:
    virtual void make() override {
        cout << "Coffee";
    }
};

class MilkDecorator : public Coffee {
    unique_ptr<Coffee> coffee;
public:
    MilkDecorator(unique_ptr<Coffee> c) : coffee(move(c)) {
    }
    virtual void make() override {
        coffee->make();
        cout << " + Milk";
    }
};


class SugarDecorator: public Coffee {
    unique_ptr<Coffee> coffee;
public:
    SugarDecorator(unique_ptr<Coffee> c) : coffee(move(c)) {
    }
    virtual void make() override {
        coffee->make();
        cout << " + Sugar";
    }
};


int main() {
    auto coffee = make_unique<SimpleCoffee>();
    auto milk_coffee = make_unique<MilkDecorator>(move(coffee));
    auto sugar_coffee = make_unique<SugarDecorator>(move(milk_coffee));

    sugar_coffee->make();
    cout << endl;
}