


'''simple docstring'''







def 							__lowercase    (   __SCREAMING_SNAKE_CASE		)					->       str:
     """simple docstring"""




     return 10 - x * x




def 							__lowercase    (   __SCREAMING_SNAKE_CASE					,	__SCREAMING_SNAKE_CASE		)					->       Optional[int]:
     """simple docstring"""




     if equation(UpperCamelCase__		) * equation(UpperCamelCase__		) >= 0:
          raise ValueError("""Wrong space!"""		)

     __a   			= a
     while (b - a) >= 0.01:
          # Find middle point
          __a   			= (a + b) / 2
          # Check if middle point is root
          if equation(UpperCamelCase__		) == 0.0:
               break
          # Decide the side to repeat the steps
          if equation(UpperCamelCase__		) * equation(UpperCamelCase__		) < 0:
               __a   			= c
          else:
               __a   			= c
     return c


if __name__ == "__main__":
 import doctest

 doctest.testmod()

 print(bisection(-2, 5))
 print(bisection(0, 6))









def    __lowerCamelCase      (					UpperCamelCase__ = 1000 ):







							'''simple docstring'''






							snake_case_     							=       2**power
							snake_case_     							=       0
							while n:
														snake_case_							,       snake_case_     							=       r + n % 10, n // 10
							return r


if __name__ == "__main__":
					print(solution(int(str(input()).strip())))




