def METHOD_NAME(hier1, hier2, thres=0.5):
    """Align the end of the hierarchies such that they end at the same exact
    second as long they have the same duration within a certain threshold.
    Parameters
    ----------
    hier1: list
        List containing hierarchical segment boundaries.
    hier2: list
        List containing hierarchical segment boundaries.
    thres: float > 0
        Threshold to decide whether two values are the same.
    """
    # Make sure we have correctly formatted hierarchies
    dur_h1 = hier1[0][-1]
    for hier in hier1:
        assert hier[-1] == dur_h1, "hier1 is not correctly " \
            "formatted {} {}".format(hier[-1], dur_h1)
    dur_h2 = hier2[0][-1]
    for hier in hier2:
        assert hier[-1] == dur_h2, "hier2 is not correctly formatted"
    # If durations are different, do nothing
    if abs(dur_h1 - dur_h2) > thres:
        return
    # Align h1 with h2
    for hier in hier1:
        hier[-1] = dur_h2