from abc import abstractmethod

class Violation:
    @abstractmethod
    def accept(self):
        pass


class UsedTimeslot(Violation):
    def __init__(self, timeslot):
        self.timeslot = timeslot

    def accept(self, scheduler):
        scheduler.set_timeslot_as_used(self.timeslot)

class TeamConstraint(Violation):
    def __init__(self, team, timeslot):
        self.team = team
        self.timeslot = timeslot

    def accept(self, team_manager):
        team_manger.dismiss_timeslot(self.team, self.timeslot)