def split_set_by_point(coord_array, point):
    """
    point_array : array of Coord
    point : Coord
    Return the array of the points on the left and the right of the point
    """
    left = []
    right = []
    for coord in set(coord_array):
        if coord.x < point.x or coord.y < point.y:
            left.append(coord)

        else:
            right.append(coord)

    return left, right