Untitled

class PriceLadder():
    def __init__(self):
        self.buy_orders = []  # Store buy orders as tuples (price, quantity)
        self.sell_orders = []  # Store sell orders as tuples (price, quantity)

    def AddOrder(self, order):
        if order.quantity > 0:
            self.buy_orders.append((order.price, order.quantity))
        else:
            self.sell_orders.append((-order.price, -order.quantity))

    def DeleteOrder(self, delete):
        self.buy_orders = [(price, quantity) for price, quantity in self.buy_orders if price != delete.price]
        self.sell_orders = [(price, quantity) for price, quantity in self.sell_orders if price != delete.price]

    def DeletePriceLevel(self, deletePriceLevel):
        self.buy_orders = [(price, quantity) for price, quantity in self.buy_orders if price != deletePriceLevel.price]
        self.sell_orders = [(price, quantity) for price, quantity in self.sell_orders if price != deletePriceLevel.price]

    def GetPriceLevels(self, artist, numberOfPriceLevels):
        print(artist)
        # Get the top `numberOfPriceLevels` buy orders
        buy_price_levels = self.buy_orders[:numberOfPriceLevels]
        for price, quantity in buy_price_levels:
            print(f"0 {price} {quantity}")

        # Get the top `numberOfPriceLevels` sell orders
        sell_price_levels = self.sell_orders[:numberOfPriceLevels]
        for price, quantity in sell_price_levels:
            print(f"{quantity} {-price} 0")

priceLadder = PriceLadder()

for line in sys.stdin:
    tokens = line.split()
    if tokens[0] == "ADD":
        priceLadder.AddOrder(AddOrder(*tokens[1:]))
    elif tokens[0] == "DEL":
        priceLadder.DeleteOrder(DeleteOrder(*tokens[1:]))
    elif tokens[0] == "DEL_PRICE":
        priceLadder.DeletePriceLevel(DeletePriceLevel(*tokens[1:]))
    else:
        artist = tokens[0]
        numberOfPriceLevels = int(tokens[1])
        priceLadder.GetPriceLevels(artist, numberOfPriceLevels)