def element_list(element, count):
    if count == 0:
        return []
    elif count > 0:
        verb = "del"
    else:
        verb = "add"

    return ["%s (%s)" % (verb, element) for _ in range(abs(count))]


def get_diff_v2(old_list: Iterable, new_list: Iterable) -> Iterable:
    diff_dict = {}

    for element in old_list:
        diff_dict[element] = diff_dict.get(element, 0) + 1

    for element in new_list:
        diff_dict[element] = diff_dict.get(element, 0) - 1

    result = []
    for element, count in diff_dict.items():
        result.extend(element_list(element, count))

    return result