def update_assignment_range(assignment: dict, delta_range: int, range_to_update_after: int) -> None:
    """
    Updates the range of a single assignment.

    :param assignment: Assignment to change
    :param delta_range: Change in range
    :param range_to_update_after: After which the ranges should be updated
    """

    range_list = [int(r)
                  for r in assignment['Range'].split(' ')]
    if range_list[0] >= range_to_update_after:
        range_list[0] += delta_range

    if range_list[2] >= range_to_update_after:
        range_list[2] += delta_range

    assignment['Range'] = ' '.join([str(r)
                                    for r in range_list])

    return None