





'''simple docstring'''

class   UpperCAmelCase      :
 def __init__(							self :List[str]				)->				None:
     A__							=     {}  # Mapping from char to TrieNode
     A__							=     False
 def 	UpperCAmelCase_				(							self :int		,			lowercase_ :Dict				)->				None:






     for word in words:
         self.insert(lowercase_				)
 def 	UpperCAmelCase_				(							self :str		,			lowercase_ :Optional[Any]				)->				None:
     A__							=     self
     for char in word:
         if char not in curr.nodes:
             A__							=     TrieNode()
         A__							=     curr.nodes[char]
     A__							=     True
 def 	UpperCAmelCase_				(							self :Tuple		,			lowercase_ :Any				)->				bool:
     A__							=     self
     for char in word:
         if char not in curr.nodes:
             return False
         A__							=     curr.nodes[char]
     return curr.is_leaf



 def 	UpperCAmelCase_				(							self :Optional[Any]		,			lowercase_ :Any				)->				None:






     def _delete(lowercase_ :int		,			lowercase_ :int		,			lowercase_ :List[Any]				) -> bool:
         if index == len(lowercase_				):
             # If word does not exist
             if not curr.is_leaf:
                 return False
             A__							=     False
             return len(curr.nodes				) == 0
         A__							=     word[index]
         A__							=     curr.nodes.get(lowercase_				)
         # If char not in current trie node
         if not char_node:
             return False
         # Flag to check if node can be deleted
         A__							=     _delete(lowercase_		,			lowercase_		,			index + 1				)
         if delete_curr:
             del curr.nodes[char]
             return len(curr.nodes				) == 0
         return delete_curr

     _delete(self		,			lowercase_		,			0				)





def 		UpperCamelCase							(				_lowerCamelCase   :   Optional[int]		,			_lowerCamelCase   :   Tuple			):



    if node.is_leaf:
        print(snake_case__		,			end=" "			)

    for key, value in node.nodes.items():
        print_words(snake_case__		,			word + key			)





def 		UpperCamelCase							(				):
    A__							=     '''banana bananas bandana band apple all beast'''.split()
    A__							=     TrieNode()
    root.insert_many(snake_case__			)
    # print_words(root, "")
    assert all(root.find(snake_case__			) for word in words			)
    assert root.find("banana"			)
    assert not root.find("bandanas"			)
    assert not root.find("apps"			)
    assert root.find("apple"			)
    assert root.find("all"			)
    root.delete("all"			)
    assert not root.find("all"			)
    root.delete("banana"			)
    assert not root.find("banana"			)
    assert root.find("bananas"			)
    return True





def 		UpperCamelCase							(				_lowerCamelCase   :   Tuple		,			_lowerCamelCase   :   Optional[int]			):
    print(str(snake_case__			)		,			"works!" if passes else "doesn\'t work :("			)





def 		UpperCamelCase							(				):
    assert test_trie()





def 		UpperCamelCase							(				):
    print_results("Testing trie functionality"		,			test_trie()			)


if __name__ == "__main__":
  main()





'''simple docstring'''




def 						lowerCAmelCase_							(  snake_case__		):




    '''simple docstring'''



    if len(snake_case__		) <= 1:
        return [tuple(snake_case__		)]

    A			:  int   =		[]

    def generate(snake_case__						,							snake_case__		):
        if k == 1:
            res.append(tuple(arr[:]		)		)
            return

        generate(k - 1						,							snake_case__		)

        for i in range(k - 1		):
            if k % 2 == 0:  # k is even
                A,    A			:  Any   =		arr[k - 1], arr[i]
            else:  # k is odd
                A,    A			:  List[str]   =		arr[k - 1], arr[0]
            generate(k - 1						,							snake_case__		)

    generate(len(snake_case__		)						,							snake_case__		)
    return res


if __name__ == "__main__":
      lowercase     :							int       						=     input('Enter numbers separated by a comma:\n').strip()
      lowercase     :							Dict       						=     [int(item) for item in user_input.split(',')]
      print(heaps(arr))




