def formula_2017_01_01(individu, period, parameters):
    """
        Gains de levée d'option
        """
    f3vf = individu('f3vf', period)
    f3vi = individu('f3vi', period)
    f3vj = individu('f3vj', period)
    return f3vf + f3vi + f3vj
