






def     _a					(       UpperCamelCase_   :			int				)	->				int:
						"""simple docstring"""







						if not isinstance(UpperCamelCase_      ,				UpperCamelCase_				):
												lowerCAmelCase__	 =  F"Input value of [number={number}] must be an integer"
												raise TypeError(UpperCamelCase_				)
						if number < 1:
												raise ValueError("Input must be a positive integer"				)
						return number * (2 * number - 1)


if __name__ == "__main__":
	import doctest

	doctest.testmod()














def     _a					(       UpperCamelCase_   :			int = 100				)	->				int:
						"""simple docstring"""







						lowerCAmelCase__	 =  1
						lowerCAmelCase__	 =  0
						for i in range(1      ,				num + 1				):
												fact *= i

						for j in str(UpperCamelCase_				):
												result += int(UpperCamelCase_				)

						return result


if __name__ == "__main__":
	print(solution(int(input('''Enter the Number: ''').strip())))






