/* Driver program to test above function */
int main()
{
    LL start;

    /* The constructed linked list is:
    1->2->3->4->5->6->7 */
    start.push(7);
    start.push(6);
    start.push(5);
    start.push(4);
    start.push(3);
    start.push(2);
    start.push(1);

    cout << start.length() << endl;
    return 0;
}