

"""simple docstring"""
from math import floor, sqrt







def       UpperCamelCase_					(     lowerCamelCase							:					Optional[Any]   )						->     int:



       """simple docstring"""







       __magic_name__			:		Any        =     0.0
       __magic_name__			:		List[Any]        =     1.0
       __magic_name__			:		List[Any]        =     int(sqrt(lowercase__   )   )
       __magic_name__			:		Optional[int]        =     root
       __magic_name__			:		Optional[Any]        =     0
       while integer_part != 2 * root:
              __magic_name__			:		Any        =     denominator * integer_part - numerator
              __magic_name__			:		Optional[Any]        =     (n - numerator**2) / denominator
              __magic_name__			:		str        =     int((root + numerator) / denominator   )
              period += 1
       return period







def       UpperCamelCase_					(     lowerCamelCase							:					List[Any] = 1_0000   )						->     int:



       """simple docstring"""







       __magic_name__			:		List[Any]        =     0
       for i in range(2     , n + 1   ):
              __magic_name__			:		Optional[int]        =     sqrt(lowercase__   )
              if sr - floor(lowercase__   ) != 0 and continuous_fraction_period(lowercase__   ) % 2 == 1:
                     count_odd_periods += 1
       return count_odd_periods


if __name__ == "__main__":
 print(F"""{solution(int(input().strip()))}""")





from __future__ import annotations






def 			UpperCAmelCase__     (     lowercase__ )			->   list[int]:
						if not list_of_ints:
												return []

						if min(lowercase__ ) < 0:
												raise ValueError("""All numbers must be positive""" )

						__lowercase											=					max(len(bin(lowercase__ )[2:] ) for x in list_of_ints )
						return _msd_radix_sort(lowercase__    ,							lowercase__ )






def 			UpperCAmelCase__     (     lowercase__    ,							lowercase__ )			->   list[int]:
						if bit_position == 0 or len(lowercase__ ) in [0, 1]:
												return list_of_ints

						__lowercase											=					[]
						__lowercase											=					[]
						# Split numbers based on bit at bit_position from the right
						for number in list_of_ints:
												if (number >> (bit_position - 1)) & 1:
																		# number has a one at bit bit_position
																		ones.append(lowercase__ )
												else:
																		# number has a zero at bit bit_position
																		zeros.append(lowercase__ )

    # recursively split both lists further
						__lowercase											=					_msd_radix_sort(lowercase__    ,							bit_position - 1 )
						__lowercase											=					_msd_radix_sort(lowercase__    ,							bit_position - 1 )

						# recombine lists
						__lowercase											=					zeros
						res.extend(lowercase__ )

						return res






def 			UpperCAmelCase__     (     lowercase__ )			->   List[Any]:
						__lowercase											=					len(lowercase__ )
						if not list_of_ints or length == 1:
												return

						if min(lowercase__ ) < 0:
												raise ValueError("""All numbers must be positive""" )

						__lowercase											=					max(len(bin(lowercase__ )[2:] ) for x in list_of_ints )
						_msd_radix_sort_inplace(lowercase__    ,							lowercase__    ,							0    ,							lowercase__ )






def 			UpperCAmelCase__     (     lowercase__    ,							lowercase__    ,							lowercase__    ,							lowercase__ )			->   Optional[Any]:
						if bit_position == 0 or end_index - begin_index <= 1:
												return

						bit_position -= 1

						__lowercase											=					begin_index
						__lowercase											=					end_index - 1
						while i <= j:
												__lowercase											=					False
												if not (list_of_ints[i] >> bit_position) & 1:
																		# found zero at the beginning
																		i += 1
																		__lowercase											=					True
												if (list_of_ints[j] >> bit_position) & 1:
																		# found one at the end
																		j -= 1
																		__lowercase											=					True

												if changed:
																		continue

												__lowercase						,      __lowercase											=					list_of_ints[j], list_of_ints[i]
												j -= 1
												if j != i:
																		i += 1

						_msd_radix_sort_inplace(lowercase__    ,							lowercase__    ,							lowercase__    ,							lowercase__ )
						_msd_radix_sort_inplace(lowercase__    ,							lowercase__    ,							lowercase__    ,							lowercase__ )


if __name__ == "__main__":
			import doctest

			doctest.testmod()





