






from __future__ import annotations

from random import random
from typing import Generic, TypeVar

a__       =     TypeVar("""KT""")
a__       =     TypeVar("""VT""")


class    _lowerCAmelCase			(		Generic[KT, VT]      ):



    """simple docstring"""



    def __init__(      self    :    str			,		UpperCamelCase__    :    KT | str = "root"			,		UpperCamelCase__    :    VT | None = None):






           '''simple docstring'''







           snake_case__	  =       key
           snake_case__	  =       value
           snake_case__	  =       []



    def __repr__(      self    :    List[str]):






           '''simple docstring'''







           return F'''Node({self.key}: {self.value})'''



    @property
    def 					__magic_name__							(      self    :    str):






           '''simple docstring'''







           return len(self.forward)


class    _lowerCAmelCase			(		Generic[KT, VT]      ):



    """simple docstring"""



    def __init__(      self    :    Dict			,		UpperCamelCase__    :    float = 0.5			,		UpperCamelCase__    :    int = 1_6):






           '''simple docstring'''







           snake_case__	  =       Node[KT, VT]()
           snake_case__	  =       0
           snake_case__	  =       p
           snake_case__	  =       max_level



    def __str__(      self    :    List[str]):






           '''simple docstring'''







           snake_case__	  =       list(self)

           if len(lowerCAmelCase_) == 0:
                  return F'''SkipList(level={self.level})'''

           snake_case__	  =       max((len(str(lowerCAmelCase_)) for item in items)			,		default=4)
           snake_case__	  =       max(lowerCAmelCase_			,		4) + 4

           snake_case__	  =       self.head
           snake_case__	  =       []

           snake_case__	  =       node.forward.copy()
           lines.append(F'''[{node.key}]'''.ljust(lowerCAmelCase_			,		"""-""") + """* """ * len(lowerCAmelCase_))
           lines.append(""" """ * label_size + """| """ * len(lowerCAmelCase_))

           while len(node.forward) != 0:
                  snake_case__	  =       node.forward[0]

                  lines.append(
                      F'''[{node.key}]'''.ljust(lowerCAmelCase_			,		"""-""")
                      + """ """.join(str(n.key) if n.key == node.key else """|""" for n in forwards))
                  lines.append(""" """ * label_size + """| """ * len(lowerCAmelCase_))
                  snake_case__	  =       node.forward

           lines.append("""None""".ljust(lowerCAmelCase_) + """* """ * len(lowerCAmelCase_))
           return F'''SkipList(level={self.level})\n''' + "\n".join(lowerCAmelCase_)



    def __iter__(      self    :    Dict):






           '''simple docstring'''







           snake_case__	  =       self.head

           while len(node.forward) != 0:
                  yield node.forward[0].key
                  snake_case__	  =       node.forward[0]



    def 					__magic_name__							(      self    :    Union[str, Any]):






           '''simple docstring'''







           snake_case__	  =       1
           while random() < self.p and level < self.max_level:
                  level += 1

           return level



    def 					__magic_name__							(      self    :    Optional[Any]			,		UpperCamelCase__    :    Optional[Any]):






           '''simple docstring'''







           snake_case__	  =       []

           snake_case__	  =       self.head

           for i in reversed(range(self.level)):
                  # i < node.level - When node level is lesser than `i` decrement `i`.
                  # node.forward[i].key < key - Jumping to node with key value higher
                  #                             or equal to searched key would result
                  #                             in skipping searched key.
                  while i < node.level and node.forward[i].key < key:
                         snake_case__	  =       node.forward[i]
                  # Each leftmost node (relative to searched node) will potentially have to
                  # be updated.
                  update_vector.append(lowerCAmelCase_)

           update_vector.reverse()  # Note that we were inserting values in reverse order.

           # len(node.forward) != 0 - If current node doesn't contain any further
           #                          references then searched key is not present.
           # node.forward[0].key == key - Next node key should be equal to search key
           #                              if key is present.
           if len(node.forward) != 0 and node.forward[0].key == key:
                  return node.forward[0], update_vector
           else:
                  return None, update_vector



    def 					__magic_name__							(      self    :    Union[str, Any]			,		UpperCamelCase__    :    KT):






           '''simple docstring'''







           snake_case__  , snake_case__	  =       self._locate_node(lowerCAmelCase_)

           if node is not None:
                  for i, update_node in enumerate(lowerCAmelCase_):
                         # Remove or replace all references to removed node.
                         if update_node.level > i and update_node.forward[i].key == key:
                                if node.level > i:
                                       snake_case__	  =       node.forward[i]
                                else:
                                       snake_case__	  =       update_node.forward[:i]



    def 					__magic_name__							(      self    :    List[Any]			,		UpperCamelCase__    :    KT			,		UpperCamelCase__    :    VT):






           '''simple docstring'''







           snake_case__  , snake_case__	  =       self._locate_node(lowerCAmelCase_)
           if node is not None:
                  snake_case__	  =       value
           else:
                  snake_case__	  =       self.random_level()

                  if level > self.level:
                         # After level increase we have to add additional nodes to head.
                         for _ in range(self.level - 1			,		lowerCAmelCase_):
                                update_vector.append(self.head)
                         snake_case__	  =       level

                  snake_case__	  =       Node(lowerCAmelCase_			,		lowerCAmelCase_)

                  for i, update_node in enumerate(update_vector[:level]):
                         # Change references to pass through new node.
                         if update_node.level > i:
                                new_node.forward.append(update_node.forward[i])

                         if update_node.level < i + 1:
                                update_node.forward.append(lowerCAmelCase_)
                         else:
                                snake_case__	  =       new_node



    def 					__magic_name__							(      self    :    List[Any]			,		UpperCamelCase__    :    VT):






           '''simple docstring'''







           snake_case__  , snake_case__	  =       self._locate_node(lowerCAmelCase_)

           if node is not None:
                  return node.value

           return None


def _UpperCAmelCase   (	):
       snake_case__	  =       SkipList()
       skip_list.insert("""Key1"""  ,					3 )
       skip_list.insert("""Key2"""  ,					12 )
       skip_list.insert("""Key3"""  ,					41 )
       skip_list.insert("""Key4"""  ,					-19 )

       snake_case__	  =       skip_list.head
       snake_case__	  =       {}
       while node.level != 0:
              snake_case__	  =       node.forward[0]
              snake_case__	  =       node.value

       assert len(__lowerCAmelCase ) == 4
       assert all_values["Key1"] == 3
       assert all_values["Key2"] == 12
       assert all_values["Key3"] == 41
       assert all_values["Key4"] == -19

def _UpperCAmelCase   (	):
       snake_case__	  =       SkipList()
       skip_list.insert("""Key1"""  ,					10 )
       skip_list.insert("""Key1"""  ,					12 )

       skip_list.insert("""Key5"""  ,					7 )
       skip_list.insert("""Key7"""  ,					10 )
       skip_list.insert("""Key10"""  ,					5 )

       skip_list.insert("""Key7"""  ,					7 )
       skip_list.insert("""Key5"""  ,					5 )
       skip_list.insert("""Key10"""  ,					10 )

       snake_case__	  =       skip_list.head
       snake_case__	  =       {}
       while node.level != 0:
              snake_case__	  =       node.forward[0]
              snake_case__	  =       node.value

       if len(__lowerCAmelCase ) != 4:
              print()
       assert len(__lowerCAmelCase ) == 4
       assert all_values["Key1"] == 12
       assert all_values["Key7"] == 7
       assert all_values["Key5"] == 5
       assert all_values["Key10"] == 10

def _UpperCAmelCase   (	):
       snake_case__	  =       SkipList()
       assert skip_list.find("""Some key""" ) is None

def _UpperCAmelCase   (	):
       snake_case__	  =       SkipList()

       skip_list.insert("""Key2"""  ,					20 )
       assert skip_list.find("""Key2""" ) == 20

       skip_list.insert("""Some Key"""  ,					10 )
       skip_list.insert("""Key2"""  ,					8 )
       skip_list.insert("""V"""  ,					13 )

       assert skip_list.find("""Y""" ) is None
       assert skip_list.find("""Key2""" ) == 8
       assert skip_list.find("""Some Key""" ) == 10
       assert skip_list.find("""V""" ) == 13

def _UpperCAmelCase   (	):
       snake_case__	  =       SkipList()
       skip_list.delete("""Some key""" )

       assert len(skip_list.head.forward ) == 0

def _UpperCAmelCase   (	):
       snake_case__	  =       SkipList()

       skip_list.insert("""Key1"""  ,					12 )
       skip_list.insert("""V"""  ,					13 )
       skip_list.insert("""X"""  ,					14 )
       skip_list.insert("""Key2"""  ,					15 )

       skip_list.delete("""V""" )
       skip_list.delete("""Key2""" )

       assert skip_list.find("""V""" ) is None
       assert skip_list.find("""Key2""" ) is None

def _UpperCAmelCase   (	):
       snake_case__	  =       SkipList()

       skip_list.insert("""Key1"""  ,					12 )
       skip_list.insert("""V"""  ,					13 )
       skip_list.insert("""X"""  ,					14 )
       skip_list.insert("""Key2"""  ,					15 )

       skip_list.delete("""V""" )
       assert skip_list.find("""V""" ) is None
       assert skip_list.find("""X""" ) == 14
       assert skip_list.find("""Key1""" ) == 12
       assert skip_list.find("""Key2""" ) == 15

       skip_list.delete("""X""" )
       assert skip_list.find("""V""" ) is None
       assert skip_list.find("""X""" ) is None
       assert skip_list.find("""Key1""" ) == 12
       assert skip_list.find("""Key2""" ) == 15

       skip_list.delete("""Key1""" )
       assert skip_list.find("""V""" ) is None
       assert skip_list.find("""X""" ) is None
       assert skip_list.find("""Key1""" ) is None
       assert skip_list.find("""Key2""" ) == 15

       skip_list.delete("""Key2""" )
       assert skip_list.find("""V""" ) is None
       assert skip_list.find("""X""" ) is None
       assert skip_list.find("""Key1""" ) is None
       assert skip_list.find("""Key2""" ) is None

def _UpperCAmelCase   (	):
       snake_case__	  =       SkipList()

       skip_list.insert("""Key1"""  ,					12 )
       skip_list.insert("""V"""  ,					13 )
       skip_list.insert("""X"""  ,					142 )
       skip_list.insert("""Key2"""  ,					15 )

       skip_list.delete("""X""" )

       def traverse_keys(a						:	Dict ):
              yield node.key
              for forward_node in node.forward:
                     yield from traverse_keys(__lowerCAmelCase )

       assert len(set(traverse_keys(skip_list.head ) ) ) == 4

def _UpperCAmelCase   (	):


       def is_sorted(a						:	Any ):
              return all(next_item >= item for item, next_item in zip(__lowerCAmelCase  ,					lst[1:] ) )

       snake_case__	  =       SkipList()
       for i in range(10 ):
              skip_list.insert(__lowerCAmelCase  ,					__lowerCAmelCase )
       assert is_sorted(list(__lowerCAmelCase ) )
       skip_list.delete(5 )
       skip_list.delete(8 )
       skip_list.delete(2 )
       assert is_sorted(list(__lowerCAmelCase ) )
       skip_list.insert(-12  ,					-12 )
       skip_list.insert(77  ,					77 )
       assert is_sorted(list(__lowerCAmelCase ) )

def _UpperCAmelCase   (	):


       for _ in range(100 ):
              # Repeat test 100 times due to the probabilistic nature of skip list
              # random values == random bugs
              test_insert()
              test_insert_overrides_existing_value()

              test_searching_empty_list_returns_none()
              test_search()

              test_deleting_item_from_empty_list_do_nothing()
              test_deleted_items_are_not_founded_by_find_method()
              test_delete_removes_only_given_key()
              test_delete_doesnt_leave_dead_nodes()

              test_iter_always_yields_sorted_values()

def _UpperCAmelCase   (	):
       snake_case__	  =       SkipList()
       skip_list.insert(2  ,					"""2""" )
       skip_list.insert(4  ,					"""4""" )
       skip_list.insert(6  ,					"""4""" )
       skip_list.insert(4  ,					"""5""" )
       skip_list.insert(8  ,					"""4""" )
       skip_list.insert(9  ,					"""4""" )

       skip_list.delete(4 )

       print(__lowerCAmelCase )


if __name__ == "__main__":
 import doctest

 doctest.testmod()
 main()








import requests
from bsa import BeautifulSoup

def _UpperCAmelCase   (	a						:	str  ,					a						:	dict ):
							snake_case__	  =       BeautifulSoup(requests.get(a  ,					params=a ).content  ,					"""html.parser""" )
							snake_case__	  =       soup.find("""div"""  ,					attrs={"""class""": """gs_ri"""} )
							snake_case__	  =       div.find("""div"""  ,					attrs={"""class""": """gs_fl"""} ).find_all("""a""" )
							return anchors[2].get_text()


if __name__ == "__main__":
	a__       =     {
	    """title""": (
	        """Precisely geometry controlled microsupercapacitors for ultrahigh areal """
	        """capacitance, volumetric capacitance, and energy density"""
	    ),
	    """journal""": """Chem. Mater.""",
	    """volume""": 3_0,
	    """pages""": """3979-3990""",
	    """year""": 2_0_1_8,
	    """hl""": """en""",
	}
	print(get_citation("""https://scholar.google.com/scholar_lookup""", params=params))
