void dodajDoListy(undoredo *&head, undoredo *&tail)
{
    int m = 0;
    undoredo *nowy = new undoredo; //wydzielam pamiec dla nowego elementu listy
    tail = head;

    for (int i = 0; i < SIZE; i++){
        for (int j = 0; j < SIZE; j++){
            nowy->stany[m] = plansza[i][j].pole;
            m++;
        }
    }

    if (head == NULL)
    {
        head = nowy;
        head->next = nowy;
    }
    else
    {
        while (tail->next != NULL){}
        tail->next = nowy;
        nowy->prev = tail;
    }

}