服务器便宜拼团

class ServerGroup:
    def __init__(self, members, server_cost):
        self.members = members
        self.server_cost = server_cost
        self.total_cost = server_cost * len(members)

    def calculate_individual_cost(self):
        return self.total_cost / len(self.members)

    def add_member(self, new_member):
        self.members.append(new_member)
        self.total_cost += self.server_cost
        return self.calculate_individual_cost()

    def remove_member(self, member_to_remove):
        if member_to_remove in self.members:
            self.members.remove(member_to_remove)
            self.total_cost -= self.server_cost
            return self.calculate_individual_cost()
        else:
            return "Member not found in the group."

# 示例使用
group = ServerGroup(members=["User1", "User2", "User3"], server_cost=100)
print(f"Initial individual cost: ${group.calculate_individual_cost()}")

new_cost = group.add_member("User4")
print(f"Cost after adding a new member: ${new_cost}")

updated_cost = group.remove_member("User2")
print(f"Cost after removing a member: ${updated_cost}")