template <typename T>
class A {
private:
    int* i;
    T* p;
    double d;

public:
    A() : i(), p(new T), d() {}

    ~A() {}

    A(const A& a) : i(new int(*a.i)), d(a.d) {
        try {
            p = new T(*a.p);
        }
        catch(...) {
            delete i;
            throw;
        }
    }

    A& operator=(const A& a) {
        d = a.d;
        *i = *a.i;
        *p = *a.p;
    }

    A(A&& a) : A(a){
        delete a.i;
        delete a.p;
    }

    A& operator=(A&& a){
        A(a);
    }
};