Tourist Shop

budget = float(input())
budget_1 = budget
product_counter = 0
product_price = 0
while budget_1 > 0:
    text = input()
    if text == 'Stop':
        print(f"You bought {product_counter} products for {product_price:.2f} leva.")
        break
    else:
        price = float(input())
        if price > budget_1:
            needed = price - budget_1
            print("You don't have enough money!")
            print(f"You need {needed:.2f} leva!")
            break
        else:
            product_counter += 1
            if product_counter % 3 == 0:
                price /= 2
            product_price += price
            budget_1 -= price