



"""simple docstring"""
import math
import random





def      __magic_name__				(							lowercase							,			lowercase = False ):
   if deriv:
      return value * (1 - value)
   return 1 / (1 + math.exp(-value ))


# Initial Value
_UpperCAmelCase     =			0.0_2





def      __magic_name__				(							lowercase							,			lowercase ):
   SCREAMING_SNAKE_CASE_: int     			=float(2 * (random.randint(1							,			100 )) - 1 )

   for _ in range(lowercase ):
      # Forward propagation
      SCREAMING_SNAKE_CASE_: Optional[int]     			=sigmoid_function(INITIAL_VALUE * weight )
      # How much did we miss?
      SCREAMING_SNAKE_CASE_: List[Any]     			=(expected / 100) - layer_a
      # Error delta
      SCREAMING_SNAKE_CASE_: Optional[int]     			=layer_1_error * sigmoid_function(lowercase							,			lowercase )
      # Update weight
      weight += INITIAL_VALUE * layer_1_delta

   return layer_a * 100


if __name__ == "__main__":
   import doctest

   doctest.testmod()

   _UpperCAmelCase     =			int(input("""Expected value: """))
   _UpperCAmelCase     =			int(input("""Number of propagations: """))
   print(forward_propagation(expected, number_propagations))








"""simple docstring"""
from math import pi





def      __magic_name__				(							lowercase							,			lowercase ):
   return 2 * pi * radius * (angle / 360)


if __name__ == "__main__":
   print(arc_length(9_0, 1_0))



