"""simple docstring"""







from collections.abc import Iterator, MutableMapping
from dataclasses import dataclass
from typing import Generic, TypeVar

_UpperCamelCase					      =  TypeVar("""KEY""")
_UpperCamelCase					      =  TypeVar("""VAL""")







@dataclass(frozen=lowerCamelCase_   ,					slots=lowerCamelCase_			)
class  lowerCamelCase__ (	Generic[KEY, VAL]			):
    SCREAMING_SNAKE_CASE		=      42
    SCREAMING_SNAKE_CASE		=      42







class  lowerCamelCase__ (	_Item			):






    def __init__(			self ):
          super().__init__(_UpperCAmelCase     ,_UpperCAmelCase )






    def __bool__(			self ):
          return False







_UpperCamelCase					      =  _DeletedItem()







class  lowerCamelCase__ (	MutableMapping[KEY, VAL]			):






    def __init__(			self     ,A = 8     ,A = 0.75 ):
          UpperCAmelCase          =	initial_block_size
          UpperCAmelCase          =	[None] * initial_block_size
          assert 0.0 < capacity_factor < 1.0
          UpperCAmelCase          =	capacity_factor
          UpperCAmelCase          =	0






    def     _UpperCamelCase							(			self     ,A ):
          return hash(_UpperCAmelCase ) % len(self._buckets )






    def     _UpperCamelCase							(			self     ,A ):
          return (ind + 1) % len(self._buckets )






    def     _UpperCamelCase							(			self     ,A     ,A     ,A ):
          UpperCAmelCase          =	self._buckets[ind]
          if not stored:
                UpperCAmelCase          =	_Item(_UpperCAmelCase     ,_UpperCAmelCase )
                self._len += 1
                return True
          elif stored.key == key:
                UpperCAmelCase          =	_Item(_UpperCAmelCase     ,_UpperCAmelCase )
                return True
          else:
                return False






    def     _UpperCamelCase							(			self ):
          UpperCAmelCase          =	len(self._buckets ) * self._capacity_factor
          return len(self ) >= int(_UpperCAmelCase )






    def     _UpperCamelCase							(			self ):






          if len(self._buckets ) <= self._initial_block_size:
                return False
          UpperCAmelCase          =	len(self._buckets ) * self._capacity_factor / 2
          return len(self ) < limit






    def     _UpperCamelCase							(			self     ,A ):
          UpperCAmelCase          =	self._buckets
          UpperCAmelCase          =	[None] * new_size
          UpperCAmelCase          =	0
          for item in old_buckets:
                if item:
                      self._add_item(item.key     ,item.val )






    def     _UpperCamelCase							(			self ):
          self._resize(len(self._buckets ) * 2 )






    def     _UpperCamelCase							(			self ):
          self._resize(len(self._buckets ) // 2 )






    def     _UpperCamelCase							(			self     ,A ):
          UpperCAmelCase          =	self._get_bucket_index(_UpperCAmelCase )
          for _ in range(len(self._buckets ) ):
                yield ind
                UpperCAmelCase          =	self._get_next_ind(_UpperCAmelCase )






    def     _UpperCamelCase							(			self     ,A     ,A ):






          for ind in self._iterate_buckets(_UpperCAmelCase ):
                if self._try_set(_UpperCAmelCase     ,_UpperCAmelCase     ,_UpperCAmelCase ):
                      break






    def __setitem__(			self     ,A     ,A ):






          if self._is_full():
                self._size_up()

          self._add_item(_UpperCAmelCase     ,_UpperCAmelCase )






    def __delitem__(			self     ,A ):






          for ind in self._iterate_buckets(_UpperCAmelCase ):
                UpperCAmelCase          =	self._buckets[ind]
                if item is None:
                      raise KeyError(_UpperCAmelCase )
                if item is _deleted:
                      continue
                if item.key == key:
                      UpperCAmelCase          =	_deleted
                      self._len -= 1
                      break
          if self._is_sparse():
                self._size_down()






    def __getitem__(			self     ,A ):






          for ind in self._iterate_buckets(_UpperCAmelCase ):
                UpperCAmelCase          =	self._buckets[ind]
                if item is None:
                      break
                if item is _deleted:
                      continue
                if item.key == key:
                      return item.val
          raise KeyError(_UpperCAmelCase )






    def __len__(			self ):
          return self._len






    def __iter__(			self ):
          yield from (item.key for item in self._buckets if item)






    def __repr__(			self ):
          UpperCAmelCase          =	""" ,""".join(
              F'''{item.key}: {item.val}''' for item in self._buckets if item )
          return F'''HashMap({val_string})'''











"""simple docstring"""







import numpy as np

def _a			(		_snake_case							):







      """simple docstring"""






      return 1 / (1 + np.exp(-vector							))


if __name__ == "__main__":
  import doctest

  doctest.testmod()



