import parkings

class RoboPark(parkings.Parking):

    def __init__(self, adr, n):
        super().__init__(n)
        self.adr = adr

    def aparca(self, m, t):
        idx = self.matricules.index('')
        self.matricules[idx] = m
        self.arribades[idx] = t
        # Alternativa: super().aparca(self[''], m, t)

    def desaparca(self, m):
        idx = self[m]
        if idx >= 0:
            self.matricules[idx] = ''
            self.arribades[idx] = None
            # Alternativa: super().desaparca(idx)