




'''simple docstring'''







import os
import string
import sys


A     =1 << 8

A     ={
    'tab': ord('\t'),
    'newline': ord('\r'),
    'esc': 27,
    'up': 65 + ARROW_KEY_FLAG,
    'down': 66 + ARROW_KEY_FLAG,
    'right': 67 + ARROW_KEY_FLAG,
    'left': 68 + ARROW_KEY_FLAG,
    'mod_int': 91,
    'undefined': sys.maxsize,
    'interrupt': 3,
    'insert': 50,
    'delete': 51,
    'pg_up': 53,
    'pg_down': 54,
}

A     =KEYMAP['up']
A     =KEYMAP['left']

if sys.platform == "win32":
   A     =[]
   A     ={
       B'\xe0H': KEYMAP['up'] - ARROW_KEY_FLAG,
       B'\x00H': KEYMAP['up'] - ARROW_KEY_FLAG,
       B'\xe0P': KEYMAP['down'] - ARROW_KEY_FLAG,
       B'\x00P': KEYMAP['down'] - ARROW_KEY_FLAG,
       B'\xe0M': KEYMAP['right'] - ARROW_KEY_FLAG,
       B'\x00M': KEYMAP['right'] - ARROW_KEY_FLAG,
       B'\xe0K': KEYMAP['left'] - ARROW_KEY_FLAG,
       B'\x00K': KEYMAP['left'] - ARROW_KEY_FLAG,
   }

for i in range(10):
   A     =ord(str(i))





def 						snake_case_							():

    if os.name == "nt":
        import msvcrt

        UpperCAmelCase			       =		'mbcs'
        # Flush the keyboard buffer
        while msvcrt.kbhit():
            msvcrt.getch()
        if len(__a     ) == 0:
            # Read the keystroke
            UpperCAmelCase			       =		msvcrt.getch()

            # If it is a prefix char, get second part
            if ch in (b"\x00", b"\xe0"):
                UpperCAmelCase			       =		ch + msvcrt.getch()
                # Translate actual Win chars to bullet char types
                try:
                    UpperCAmelCase			       =		chr(WIN_KEYMAP[cha]     )
                    WIN_CH_BUFFER.append(chr(KEYMAP['''mod_int''']     )     )
                    WIN_CH_BUFFER.append(__a     )
                    if ord(__a     ) in (
                        KEYMAP["insert"] - 1 << 9,
                        KEYMAP["delete"] - 1 << 9,
                        KEYMAP["pg_up"] - 1 << 9,
                        KEYMAP["pg_down"] - 1 << 9,
                    ):
                        WIN_CH_BUFFER.append(chr(1_2_6     )     )
                    UpperCAmelCase			       =		chr(KEYMAP['''esc''']     )
                except KeyError:
                    UpperCAmelCase			       =		cha[1]
            else:
                UpperCAmelCase			       =		ch.decode(__a     )
        else:
            UpperCAmelCase			       =		WIN_CH_BUFFER.pop(0     )
    elif os.name == "posix":
        import termios
        import tty

        UpperCAmelCase			       =		sys.stdin.fileno()
        UpperCAmelCase			       =		termios.tcgetattr(__a     )
        try:
            tty.setraw(__a     )
            UpperCAmelCase			       =		sys.stdin.read(1     )
        finally:
            termios.tcsetattr(__a    ,   termios.TCSADRAIN    ,   __a     )
    return ch







def 						snake_case_							():
    UpperCAmelCase			       =		get_raw_chars()
    if ord(__a     ) in [KEYMAP["interrupt"], KEYMAP["newline"]]:
        return char

    elif ord(__a     ) == KEYMAP["esc"]:
        UpperCAmelCase			       =		get_raw_chars()
        if ord(__a     ) == KEYMAP["mod_int"]:
            UpperCAmelCase			       =		get_raw_chars()
            if ord(__a     ) >= KEYMAP["arrow_begin"] - ARROW_KEY_FLAG and ord(__a     ) <= KEYMAP["arrow_end"] - ARROW_KEY_FLAG:
                return chr(ord(__a     ) + ARROW_KEY_FLAG     )
            else:
                return KEYMAP["undefined"]
        else:
            return get_raw_chars()

    else:
        if char in string.printable:
            return char
        else:
            return KEYMAP["undefined"]






'''simple docstring'''







from __future__ import annotations

from random import choice





def 					UpperCAmelCase_		(__a      :    str ):






   """simple docstring"""

   return choice(__a )





def 					UpperCAmelCase_		(__a      :    list[int] ,	__a      :    int ):






   """simple docstring"""

   _a				:	Dict			=   random_pivot(__a )

   # partition based on pivot
   # linear time
   _a				:	Optional[int]			=   [e for e in lst if e < pivot]
   _a				:	List[str]			=   [e for e in lst if e > pivot]

   # if we get lucky, pivot might be the element we want.
   # we can easily see this:
   # small (elements smaller than k)
   # + pivot (kth element)
   # + big (elements larger than k)
   if len(__a ) == k - 1:
      return pivot
   # pivot is in elements bigger than k
   elif len(__a ) < k - 1:
      return kth_number(__a ,	k - len(__a ) - 1 )
   # pivot is in elements smaller than k
   else:
      return kth_number(__a ,	__a )


if __name__ == "__main__":
  import doctest

  doctest.testmod()



