



from __future__ import annotations

from typing import Any

def     __lowercase(	UpperCAmelCase__ ):


      """simple docstring"""



      create_state_space_tree(UpperCAmelCase__   ,   []   ,   0 )

def     __lowercase(	UpperCAmelCase__   ,   UpperCAmelCase__   ,   UpperCAmelCase__ ):


      """simple docstring"""



      if index == len(UpperCAmelCase__ ):
            print(UpperCAmelCase__ )
            return

      create_state_space_tree(UpperCAmelCase__   ,   UpperCAmelCase__   ,   index + 1 )
      current_subsequence.append(sequence[index] )
      create_state_space_tree(UpperCAmelCase__   ,   UpperCAmelCase__   ,   index + 1 )
      current_subsequence.pop()


if __name__ == "__main__":
    a_						:     list[Any]	     =		[3, 1, 2, 4]
    generate_all_subsequences(seq)

    seq.clear()
    seq.extend(['A', 'B', 'C'])
    generate_all_subsequences(seq)




from math import pi

def     __lowercase(	UpperCAmelCase__   ,   UpperCAmelCase__ ):


      """simple docstring"""



      return 2 * pi * radius * (angle / 360)


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