Билет 1
#include "stdafx.h"
#include <iostream>
using namespace std;

class first
{
protected:
    double a;
    double b;
public:
    first(double aa, double bb) :a(aa), b(bb) {}
    virtual double square(first&c)
    {
        return c.b*c.a;
    }
    ~first() { cout << "work1!" << endl; }
};
class second :public first
{
public:
    second(double aa, double bb) :first(aa, bb) {}
    double square(first&c) override
    {
        return 3.14*(c.a + c.b)*(c.a + c.b);
    }
    ~second() { cout << "work2!" << endl; };
};


int main()
{
    first object1(5, 6);
    double s1, s2;
    s1 = square(object1);
    second object2(1, 1);
    s2 = square(object2);
    return 0;
}