import requests







def     _a				(      lowercase__  :			str     ,  lowercase__  :			str ):







     '''simple docstring'''


     SCREAMING_SNAKE_CASE__				:				List[str]			=		{'Content-Type': 'application/json'}
     SCREAMING_SNAKE_CASE__				:				int			=		requests.post(__snake_case     ,  json={'text': message_body}     ,  headers=__snake_case )
     if response.status_code != 2_00:
          SCREAMING_SNAKE_CASE__				:				str			=		(
              'Request to slack returned an error '
              f'''{response.status_code}, the response is:\n{response.text}'''
          )
          raise ValueError(__snake_case )


if __name__ == "__main__":
      # Set the slack url to the one provided by Slack when you create the webhook at
      # https://my.slack.com/services/new/incoming-webhook/
      send_slack_message("<YOUR MESSAGE BODY>", "<SLACK CHANNEL URL>")




def     _a				(      lowercase__  :			int = 1_00_00_00 ):







     '''simple docstring'''


     SCREAMING_SNAKE_CASE__				:				str			=		[i - 1 for i in range(limit + 1 )]

     for i in range(2     ,  limit + 1 ):
          if phi[i] == i - 1:
               for j in range(2 * i     ,  limit + 1     ,  lowercase__ ):
                    phi[j] -= phi[j] // i

     return sum(phi[2 : limit + 1] )


if __name__ == "__main__":
      print(solution())



