
'''simple docstring'''
from __future__ import annotations

def 				UpperCamelCase_       (		__SCREAMING_SNAKE_CASE,						__SCREAMING_SNAKE_CASE,						__SCREAMING_SNAKE_CASE,						):
    """simple docstring"""






    if not all((nth_term, start_term_a, common_ratio_r)    ):
        return []
    snake_case_	:      list[float | int]            =  []
    snake_case_	:      Optional[int]            =  1
    snake_case_	:      Union[str, Any]            =  common_ratio_r
    for _ in range(int(__SCREAMING_SNAKE_CASE    )    ):
        if not series:
            series.append(__SCREAMING_SNAKE_CASE    )
        else:
            power += 1
            series.append(float(start_term_a * multiple    )    )
            snake_case_	:      Optional[Any]            =  pow(float(__SCREAMING_SNAKE_CASE    ),						__SCREAMING_SNAKE_CASE    )
    return series


if __name__ == "__main__":
  import doctest

  doctest.testmod()

  a_     =  float(input("Enter the last number (n term) of the Geometric Series"))
  a_     =  float(input("Enter the starting term (a) of the Geometric Series"))
  a_     =  float(
      input("Enter the common ratio between two terms (r) of the Geometric Series")
  )
  print("Formula of Geometric Series => a + ar + ar^2 ... +ar^n")
  print(geometric_series(nth_term, start_term_a, common_ratio_r))






'''simple docstring'''
from __future__ import annotations

from typing import Any






class 				UpperCAmelCase_			:





 def __init__(      self	,    lowercase_	,    lowercase_):  # noqa: A002
     snake_case_	:      List[str]            =  item
     snake_case_	:      Dict            =  next






class 				UpperCAmelCase_			:





 def __init__(      self):
     snake_case_	:      Node | None            =  None
     snake_case_	:      List[str]            =  0





 def     snake_case__						(      self	,    lowercase_):
     snake_case_	:      List[Any]            =  Node(lowercase_	,    self.head)
     self.size += 1





 def     snake_case__						(      self):
     # Switched 'self.is_empty()' to 'self.head is None'
     # because mypy was considering the possibility that 'self.head'
     # can be None in below else part and giving error
     if self.head is None:
         return None
     else:
         snake_case_	:      List[Any]            =  self.head.item
         snake_case_	:      Any            =  self.head.next
         self.size -= 1
         return item





 def     snake_case__						(      self):
     return self.head is None





 def __str__(      self):
     if self.is_empty():
         return ""
     else:
         snake_case_	:      Dict            =  self.head
         snake_case_	:      Optional[Any]            =  ""
         snake_case_	:      list[str]            =  []
         while iterate:
             item_list.append(str(iterate.item))
             snake_case_	:      List[str]            =  iterate.next

         snake_case_	:      Optional[Any]            =  " --> ".join(lowercase_)

         return item_str





 def __len__(      self):
     return self.size




