def description_length(subsequence, num_bits):
    """
    :param subsequence: Subsequence - a vector of elements each represented with some number of bits.
    :param num_bits: Number of bits used to represent each element in this subsequence.
    :return: The description length of the subsequence. This corresponds to the space required to store this sequence uncompressed.

    >>> s1 = np.array([1, 3, 4, 5, 4, 3, 6, 15, 14, 13, 12, 0, 2, 4, 2, 6, 10, 11, 9, 3])
    >>> '%0.2f' % description_length(s1, num_bits=4)
    '80.00'
    """
    return subsequence.shape[0] * num_bits