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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_short_status(self, hosts, services):
 """Get the short status of this host :return: "O", "W", "C", "U', or "n/a" based on service state_id or business_rule state :rtype: str """

        mapping = {
            0: "O",
            1: "W",
            2: "C",
            3: "U",
            4: "N",
        }
        if self.got_business_rule:
            return mapping.get(self.business_rule.get_state(hosts, services), "n/a")

        return mapping.get(self.state_id, "n/a")