class Seller:
    def __init__(self, seller_name, budget):
        self.seller_name = seller_name
        self.budget = budget
        self.buildings_for_sale = []

    def add_building(self, building, price):
        if price > self.budget:
            return "You haven't enough money to buy this building."

        self.buildings_for_sale.append(building)
        self.budget -= price
        return f"You add building {building.name} with {building.floors} floors for sale."

    def sell(self, building_name, amount):
        for building in self.buildings_for_sale:
            if building.name == building_name:
                self.budget += amount
                self.buildings_for_sale.remove(building)
                return f"You sold `{building.name}` for {amount}$"
        return "You haven't this building in your list."

    def building_status(self):
        result = "Buildings status:\n"
        for building in self.buildings_for_sale:
            result += f"==== '{building.name}' " + f"with {building.floors} floors" + "\n"
        return result.strip()

    def current_budget(self):
        return f"{self.seller_name}'s budget is {self.budget}$"