def get_ties(point_margin):
    """Determine a tie based on the point margin.

    Parameters
    ----------
    point_margin : int
        The point margin can be positive, zero, or negative.

    Returns
    -------
    tied : int
        If the point margin is equal to 0, return 1, else 0.

    """
    tied = 1 if point_margin == 0 else 0
    return tied
