void generatoare(unsigned int n)
{
    int k = 0;
    for(int div = 2; div <= n / 2; div = div + 2)
    {
        int cat = n / div;
        if(((cat * div) + (div / cat)) == n)
        {
            cout << div << "-" << cat << " ";
            k++;
        }
    }
    if(n % 2 == 0 && (n / 2) % 2 == 0)
    {
        cout << n / 2 << "-" << 1 << " ";
        k++;
    }
    if(k == 0)
        cout << "nu exista";
}