1def function_that_says_ni(*args, **kwargs):
 2    храсталак = []
 3    total_cost = 0
 4    unique_letters = set()
 5
 6    def помощна_функция(potential_храст):
 7        nonlocal total_cost
 8        if type(potential_храст) is dict and potential_храст["name"].lower() in ["храст", "shrub", "bush"]:
 9            if "cost" not in potential_храст:
10                potential_храст["cost"] = 0
11            else:
12                total_cost+=potential_храст["cost"]
13            храсталак.append(potential_храст)
14            return True
15        else:
16            return False
17    
18    for potential in args:
19        помощна_функция(potential)
20
21    for key, potential in kwargs.items():
22        if помощна_функция(potential):
23            unique_letters.update(key)
24
25    if total_cost > 42 or int(total_cost) == 0 or len(unique_letters) % int(total_cost) != 0:
26        return "Ni!"
27
28    return f"{total_cost:.2f}лв"