class CannotChangeThePastException(Exception):
    pass



class ConservationOfVillagersException(Exception):
    pass



class GatherBuildingNotAvailableException(Exception):
    pass



class IllegalVillagerMoveException(Exception):
    pass



class MissingDependencyException(Exception):
    pass



class NotEnoughResourcesException(Exception):
    pass



class ProductionBuildingNotAvailableException(Exception):
    pass



class YallGotHousedException(Exception):
    pass