class Personatge:
    def __init__(self, nom, nvides):
        self.nom = nom
        self.vides = nvides
        self.__carac = {}
    def __getitem__(self, c):
        if c not in self.__carac:
            return -1
        return self.__carac[c]
    def __setitem__(self, c, valor):
        self.__carac[c] = valor
    def __len__(self):
        return len(self.__carac)