def formula_2018_01_01(foyer_fiscal, period, parameters):
    """
        Les assiettes des plus-values du PFU doivent être brutes (et non nettes)
        """
    f3sa = foyer_fiscal('f3sa', period)
    f3vg = foyer_fiscal('f3vg', period)
    f3ua = foyer_fiscal('f3ua', period)
    return f3sa + f3vg + f3ua
