




from __future__ import annotations

from collections.abc import Callable
from typing import Generic, TypeVar

lowercase__      :			str           =					TypeVar("T")
lowercase__      :			List[str]           =					TypeVar("U")




class 			a__       (					Generic[T, U]      ):







     def __init__(	self  ,		A  ,		A )  ->    List[Any]:



          '''simple docstring'''



          a      =      key
          a      =      val
          a      =      0
          a      =      None
          a      =      None







     def __repr__(	self )  ->    str:



          '''simple docstring'''



          return "Node: key: {}, val: {}, freq: {}, has next: {}, has prev: {}".format(
              self.key  ,		self.val  ,		self.freq  ,		self.next is not None  ,		self.prev is not None )







class 			a__       (					Generic[T, U]      ):







     def __init__(	self )  ->    None:



          '''simple docstring'''



          a      =      DoubleLinkedListNode(A  ,		A )
          a      =      DoubleLinkedListNode(A  ,		A )
          a  ,      a      =      self.rear, self.head







     def __repr__(	self )  ->    str:



          '''simple docstring'''



          a      =      ["DoubleLinkedList"]
          a      =      self.head
          while node.next is not None:
               rep.append(str(A ) )
               a      =      node.next
          rep.append(str(self.rear ) )
          return ",\n    ".join(A )







     def 			lowerCAmelCase_				(	self  ,		A )  ->    None:



          '''simple docstring'''



          a      =      self.rear.prev

          # All nodes other than self.head are guaranteed to have non-None previous
          assert previous is not None

          a      =      node
          a      =      previous
          a      =      node
          a      =      self.rear
          node.freq += 1
          self._position_node(A )







     def 			lowerCAmelCase_				(	self  ,		A )  ->    None:



          '''simple docstring'''



          while node.prev is not None and node.prev.freq > node.freq:
               # swap node with previous node
               a      =      node.prev

               a      =      previous_node.prev
               a      =      node.prev
               a      =      previous_node
               a      =      node







     def 			lowerCAmelCase_				(	self  ,		A )  ->    DoubleLinkedListNode[T, U] | None:



          '''simple docstring'''



          if node.prev is None or node.next is None:
               return None

          a      =      node.next
          a      =      node.prev
          a      =      None
          a      =      None
          return node







class 			a__       (					Generic[T, U]      ):
     a		:			dict[Callable[[T], U], LFUCache[T, U]]							=	{}







     def __init__(	self  ,		A )  ->    List[str]:



          '''simple docstring'''



          a      =      DoubleLinkedList()
          a      =      capacity
          a      =      0
          a      =      0
          a      =      0
          a      =      {}







     def __repr__(	self )  ->    str:



          '''simple docstring'''



          return (
              F'''CacheInfo(hits={self.hits}, misses={self.miss}, '''
              F'''capacity={self.capacity}, current_size={self.num_keys})'''
          )







     def __contains__(	self  ,		A )  ->    bool:



          '''simple docstring'''



          return key in self.cache







     def 			lowerCAmelCase_				(	self  ,		A )  ->    U | None:



          '''simple docstring'''



          if key in self.cache:
               self.hits += 1
               a      =      self.cache[key]
               a      =      self.list.remove(self.cache[key] )
               assert node == value_node

               # node is guaranteed not None because it is in self.cache
               assert node is not None
               self.list.add(A )
               return node.val
          self.miss += 1
          return None







     def 			lowerCAmelCase_				(	self  ,		A  ,		A )  ->    None:



          '''simple docstring'''



          if key not in self.cache:
               if self.num_keys >= self.capacity:
                    # delete first node when over capacity
                    a      =      self.list.head.next

                    # guaranteed to have a non-None first node when num_keys > 0
                    # explain to type checker via assertions
                    assert first_node is not None
                    assert first_node.key is not None
                    assert self.list.remove(A ) is not None
                    # first_node guaranteed to be in list

                    del self.cache[first_node.key]
                    self.num_keys -= 1
               a      =      DoubleLinkedListNode(A  ,		A )
               self.list.add(self.cache[key] )
               self.num_keys += 1

          else:
               a      =      self.list.remove(self.cache[key] )
               assert node is not None  # node guaranteed to be in list
               a      =      value
               self.list.add(A )







     @classmethod
     def 			lowerCAmelCase_				(	cls  ,		A = 128 )  ->    Callable[[Callable[[T], U]], Callable[..., U]]:



          '''simple docstring'''



          def cache_decorator_inner(A ) -> Callable[..., U]:
               def cache_decorator_wrapper(*A ) -> U:
                    if func not in cls.decorator_function_to_instance_map:
                         a      =      LFUCache(A )

                    a      =      cls.decorator_function_to_instance_map[func].get(args[0] )
                    if result is None:
                         a      =      func(*A )
                         cls.decorator_function_to_instance_map[func].put(args[0]  ,		A )
                    return result

               def cache_info() -> LFUCache[T, U]:
                    return cls.decorator_function_to_instance_map[func]

               setattr(A  ,		"cache_info"  ,		A )  # noqa: B010

               return cache_decorator_wrapper

          return cache_decorator_inner


if __name__ == "__main__":
   import doctest

   doctest.testmod()







def 					SCREAMING_SNAKE_CASE							(   __UpperCamelCase)			->     list:
     a      =      []
     a      =      1

     for i in range(len(__UpperCamelCase)):
          if i + 1 < len(__UpperCamelCase) and text[i] == text[i + 1]:
               count += 1
          else:
               encoded.append((text[i], count))
               a      =      1

     return encoded

def 					SCREAMING_SNAKE_CASE							(   __UpperCamelCase)			->     str:
     return "".join(char * length for char, length in encoded)


if __name__ == "__main__":
   from doctest import testmod

   testmod(name="run_length_encode", verbose=True)
   testmod(name="run_length_decode", verbose=True)

