def compare_lists(llist1: SinglyLinkedListNode, llist2: SinglyLinkedListNode) -> bool:
    """Iteratively check two linked lists for equality."""
    while llist1 and llist2 and llist1.data == llist2.data:
        llist1 = llist1.next
        llist2 = llist2.next
    return llist1 is None and llist2 is None


def compare_lists(llist1: SinglyLinkedListNode, llist2: SinglyLinkedListNode) -> bool:
    """Recursively check two linked lists for equality."""
    match llist1 is None, llist2 is None:
        case False, False:
            return (
                compare_lists(llist1.next, llist2.next)
                if llist1.data == llist2.data
                else False
            )
        case True, True:
            return True
        case _:
            return False