class  UpperCamelCase				:

     '''simple docstring'''

     def __init__(					self						) ->				None:






           """simple docstring"""
           _lowerCamelCase			    =				{}  # Mapping from char to TrieNode
           _lowerCamelCase			    =				False



     def 		UpperCamelCase_						(					self				,				A_						) ->				None:






           """simple docstring"""
           for word in words:
                 self.insert(A_						)



     def 		UpperCamelCase_						(					self				,				A_						) ->				None:






           """simple docstring"""
           _lowerCamelCase			    =				self
           for char in word:
                 if char not in curr.nodes:
                       _lowerCamelCase			    =				TrieNode()
                 _lowerCamelCase			    =				curr.nodes[char]
           _lowerCamelCase			    =				True



     def 		UpperCamelCase_						(					self				,				A_						) ->				bool:






           """simple docstring"""
           _lowerCamelCase			    =				self
           for char in word:
                 if char not in curr.nodes:
                       return False
                 _lowerCamelCase			    =				curr.nodes[char]
           return curr.is_leaf





     def 		UpperCamelCase_						(					self				,				A_						) ->				None:






           """simple docstring"""

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

           _delete(self				,				A_				,				0						)





def       __magic_name__(  __UpperCAmelCase ,						__UpperCAmelCase		)						->    None:



      '''simple docstring'''

      if node.is_leaf:
            print(__UpperCAmelCase ,						end=''' '''		)

      for key, value in node.nodes.items():
            print_words(__UpperCAmelCase ,						word + key		)
def       __magic_name__(  )						->    bool:



      '''simple docstring'''

      _lowerCamelCase			    =				'''banana bananas bandana band apple all beast'''.split()
      _lowerCamelCase			    =				TrieNode()
      root.insert_many(__UpperCAmelCase		)
      # print_words(root, "")
      assert all(root.find(__UpperCAmelCase		) 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       __magic_name__(  __UpperCAmelCase ,						__UpperCAmelCase		)						->    None:



      '''simple docstring'''

      print(str(__UpperCAmelCase		) ,						'''works!''' if passes else '''doesn\'t work :('''		)
def       __magic_name__(  )						->    None:



      '''simple docstring'''

      assert test_trie()
def       __magic_name__(  )						->    None:



      '''simple docstring'''

      print_results('''Testing trie functionality''' ,						test_trie()		)


if __name__ == "__main__":
     main()


def       __magic_name__(  __UpperCAmelCase ,						__UpperCAmelCase		)						->    bool:



      '''simple docstring'''

      _lowerCamelCase			    =				len(__UpperCAmelCase		)
      _lowerCamelCase			    =				[[False] * (required_sum + 1) for _ in range(arr_len + 1		)]

      # for each arr value, a sum of zero(0) can be formed by not taking any element
      # hence True/1
      for i in range(arr_len + 1		):
            _lowerCamelCase			    =				True

      # sum is not zero and set is empty then false
      for i in range(1 ,						required_sum + 1		):
            _lowerCamelCase			    =				False

      for i in range(1 ,						arr_len + 1		):
            for j in range(1 ,						required_sum + 1		):
                  if arr[i - 1] > j:
                        _lowerCamelCase			    =				subset[i - 1][j]
                  if arr[i - 1] <= j:
                        _lowerCamelCase			    =				subset[i - 1][j] or subset[i - 1][j - arr[i - 1]]

      return subset[arr_len][required_sum]


if __name__ == "__main__":
     import doctest

     doctest.testmod()