class Customer:
    def __init__(self, name):
        self.name = name
        self.points = 0

    def pay(self, amount):
        self.points += int(amount * 0.01)

class VIPCustomer(Customer):
    def pay(self, amount):
        self.points += int(amount * 0.05)

    def issue_coupon(self):
        return f"{self.name}님 무료 쿠폰 발급 완료"

normal = Customer("일반")
vip = VIPCustomer("VIP")

normal.pay(10000)
vip.pay(10000)

print(f"일반 포인트: {normal.points}P / VIP 포인트: {vip.points}P 적립 완료.")