1def is_valid_bush_name(element):
 2    if type(element) == dict and 'name' in element:
 3        name = element['name'].lower()
 4        if name in ('храст', 'bush', 'shrub'):
 5            return True
 6    return False
 7
 8def filter_kwargs(kwargs):
 9    res = {}
10    for name_of_element, element in kwargs.items():
11        if is_valid_bush_name(element):
12            res[name_of_element] = element
13    return res
14        
15def ch_count(kwargs):
16    res = set()
17    for name in kwargs:
18        for ch in name:
19         res.add(ch)
20    return len(res)
21    
22def find_price(args):
23    price = 0
24    for element in args:
25        price += element.get('cost', 0)
26    return price
27
28def is_it_good(price, ch_count):
29    if int(price) == 0 or int(price) > 42 or ch_count % int(price) != 0:
30        return "Ni!" 
31    return f'{price:.2f}лв'
32
33def function_that_says_ni(*args, **kwargs):  
34    args_filtered = list(filter(is_valid_bush_name, args))
35    kwargs_filtered = filter_kwargs(kwargs)
36    
37    distinct_ch_count = ch_count(kwargs_filtered)
38    
39    args_filtered.extend(kwargs_filtered.values())
40    
41    price = find_price(args_filtered)
42    return is_it_good(price, distinct_ch_count)