#include <iostream>
#include <Windows.h>

using namespace std;

class List
{
public:

    List()
    {
        Head = new Node();
    }

    ~List()
    {
        delete Head;
    }

    void add(INT value)
    {
        Node* tmp = new Node(value, Head);
        Head = tmp;
    }

    void copy(const List& other)
    {
        delete this->Head;
        Head = new Node(other.Head->value);

        Node* src = this->Head;
        Node* dst = other.Head->next;

        while (dst->next)
        {
            src->next = new Node(dst->value);

            src = src->next;
            dst = dst->next;
        }

        src->next = new Node(dst->value);

    }

public:
    struct Node
    {
        Node* next;
        INT value;

        Node(INT val = 0, Node* next = NULL) : value(val), next(next) {}

        ~Node()
        {
            if (next)
                delete next;
        }

    } *Head;
};

int main()
{

    List a, b;

    a.add(10);
    a.add(50);
    a.add(780);
    a.add(13);


    for (List::Node* p = a.Head; p->next; p = p->next)
    {
        cout << p->value << endl;
    }

    cout << endl;

    b.copy(a);

    for (List::Node* p = b.Head; p->next; p = p->next)
    {
        cout << p->value << endl;
    }

    return 0;
}