题解 | #自动售货系统#

class Goods:#商品
    def __init__(self, amount):
        a = [["A1", 0], ["A2", 0], ["A3", 0], ["A4", 0], ["A5", 0], ["A6", 0]]
        self.price = {"A1": 2, "A2": 3, "A3": 4, "A4": 5, "A5": 8, "A6": 6}
        for i in range(len(amount)):
            a[i][1] = amount[i]
        self.amount = dict(sorted(a, key=lambda x: x[1]))


class Depositbox:#存钱箱，余额
    def __init__(self, amount):
        b = [[1, 0], [2, 0], [5, 0], [10, 0]]
        for i in range(len(amount)):
            b[i][1] = amount[i]
        self.thing = dict(b)
        self.total = 0

    def balance(self, post):
        self.total += post


class Function:#功能
    def p(self, money):#投币
        small_value = depositbox.thing[1] + depositbox.thing[2] * 2
        if money not in [1, 2, 5, 10]:
            print("E002:Denomination error")
        elif money in [5, 10] and money > small_value:
            print("E003:Change is not enough, pay fail")
        elif sum(goods.amount.values()) == 0:
            print("E005:All the goods sold out")
        else:
            depositbox.thing[money] += 1
            depositbox.balance(money)
            print(f"S002:Pay success,balance={depositbox.total}")

    def b(self, name):#买
        if name not in ["A1", "A2", "A3", "A4", "A5", "A6"]:
            print("E006:Goods does not exist")
        elif goods.amount[name] == 0:
            print("E007:The goods sold out")
        elif depositbox.total < goods.price[name]:
            print("E008:Lack of balance")
        else:
            depositbox.balance(goods.price[name] * (-1))
            goods.amount[name] -= 1
            print(f"S003:Buy success,balance={depositbox.total}")

    def c1(self, cost):

        x = cost
        y = []
        z = {1: 0, 2: 0, 5: 0, 10: 0}
        for i, j in depositbox.thing.items():
            for k in range(j):
                y.append(i)
        y.reverse()
        for i in y:
            if x == 0:
                return z
            if x - i >= 0:
                z[i] += 1
                x -= i
            if x - i < 0:
                continue
        return False

    def c(self):#退币
        if depositbox.total == 0:
            print("E009:Work failure")
        elif depositbox.total > 0:
            for q in range(depositbox.total, -1, -1):
                if self.c1(q):
                    for i, j in self.c1(q).items():
                        depositbox.thing[i] -= j
                        depositbox.balance(i * j * (-1))
                        print(f"{i} yuan coin number={j}")
                    break
                else:
                    return "ERROR"

    def q(self, parameter):#查询
        if parameter == 0:
            amount = sorted(
                list(goods.amount.items()), key=lambda x: x[1], reverse=True
            )
            for i in range(len(goods.price)):
                print(amount[i][0], goods.price[amount[i][0]], amount[i][1])
        elif parameter == 1:
            for i, j in depositbox.thing.items():
                print(f"{i} yuan coin number={j}")


order = input().split(";")
for i in order:
    if "r" in i:
        v = i.split()
        n1 = list(map(int, v[1].split("-")))
        n2 = list(map(int, v[2].split("-")))
        goods = Goods(n1)
        depositbox = Depositbox(n2)
        print("S001:Initialization is successful")
    function = Function()
    if "p" in i:
        v1 = int(i.split()[1])
        function.p(v1)
    if "b" in i:
        v2 = i.split()[1]
        function = Function()
        function.b(v2)
    if "c" in i:
        function.c()
    if "q" in i:
        if i in ["q 0", "q 1"]:
            v3 = int(i.split()[1])
            function.q(v3)
        else:
            print("E010:Parameter error")