1def calculate_price(price_list):
 2    total_price = 0.00
 3    integer_price = 0
 4
 5    for price in price_list:
 6        total_price += price
 7        integer_price += int(price)
 8    
 9    return (total_price, integer_price)
10
11def check_names(name_list, price):
12    if price == 0:
13        return False
14    
15    letters = set()
16    for name in name_list:
17        for ch in name:
18            letters.add(ch)
19
20    return len(letters) % price == 0
21
22def function_that_says_ni(*args, **kwargs):
23    prices = []
24    names = []
25    bush_names = ('храст', 'shrub', 'bush')
26
27    for arg in args:
28        if type(arg) is not dict:
29            continue
30        if 'name' not in arg:
31            continue
32        if str(arg['name']).lower() not in bush_names:
33            continue
34        if 'cost' in arg:
35            prices.append(arg.get('cost', 0))
36    
37
38    for arg_name, arg in kwargs.items():
39        if type(arg) is not dict:
40            continue
41        if 'name' not in arg:
42            continue
43        if str(arg['name']).lower() not in bush_names:
44            continue
45        if 'cost' in arg:
46            prices.append(arg.get('cost', 0))
47        names.append(arg_name)
48    
49    price, integer_price = calculate_price(prices)
50    if price > 42:
51        return 'Ni!'
52
53    if check_names(names, integer_price):
54        return f'{format(price, '.2f')}лв'
55    else:
56        return 'Ni!'