





def     SCREAMING_SNAKE_CASE			(      lowerCAmelCase					):

       if not isinstance(lowerCAmelCase    ,       lowerCAmelCase					):
              _UpperCamelCase              =						f'''Input value of [number={number}] must be an integer'''
              raise TypeError(lowerCAmelCase					)

       if number < 1:
              _UpperCamelCase              =						f'''Input value of [number={number}] must be > 0'''
              raise ValueError(lowerCAmelCase					)

       _UpperCamelCase              =						1

       for i in range(1    ,       lowerCAmelCase					):
              current_number *= 4 * i - 2
              current_number //= i + 1

       return current_number


if __name__ == "__main__":
       import doctest

       doctest.testmod()













from __future__ import annotations

from collections.abc import Iterator

class  __A:

     def __init__(      self,       A      ):





            """simple docstring"""

            _UpperCamelCase              =						value
            _UpperCamelCase              =						None
            _UpperCamelCase              =						None






class  __A:

     def __init__(      self,       A      ):





            """simple docstring"""

            _UpperCamelCase              =						tree

     def 	_UpperCamelCase     (      self,       A      ):





            """simple docstring"""

            if node is None:
                   return 0
            return node.value + (
                self.depth_first_search(node.left      ) + self.depth_first_search(node.right      )
            )



     def __iter__(      self      ):





            """simple docstring"""

            yield self.depth_first_search(self.tree      )


if __name__ == "__main__":
       import doctest

       doctest.testmod()






