#include <iostream>
using namespace std;

class first
{
protected:
    int *mas;
    int size;

public:
    first()
    {
        cout << "Size: ";
        cin >> size; cout << endl;
        mas = new int[size];
        cout << "Array: ";
        for (int i = 0; i < size; i++)
        {
            cin >> mas[i];
            cout << " ";
        }
    }
    void sum()
    {
        int sum = 0;
        for (int i = 0; i < size; i++)
        {
            sum += mas[i];
        }
        cout <<"S = " << sum << endl;
    }
    ~first()
    {
        delete[]mas;
    }
};

class second : public first
{
private:
    first ah;
    int a;
    int b;
public:
    second(int aa, int bb):ah()
    {
        a = aa;
        b = bb;
    }

    void multiply()
    {
        int mult=1;
        for (int i = 0; i < size; i++)
        {
            mult *= mas[i];
        }
        cout << "M = " << mult << endl;
    }
    void show()
    {
        cout << "a: " << a << " b: " << b << endl;
    }
};

int main()
{
    second a(5,5);
    a.show();
    a.sum();
    a.multiply();
    return 0;
}