


'''simple docstring'''






import os
import string
import sys


a_   :      Any				    =      1 << 8

a_   :      List[Any]				    =      {
    "tab": ord("\t"),
    "newline": ord("\r"),
    "esc": 2_7,
    "up": 6_5 + ARROW_KEY_FLAG,
    "down": 6_6 + ARROW_KEY_FLAG,
    "right": 6_7 + ARROW_KEY_FLAG,
    "left": 6_8 + ARROW_KEY_FLAG,
    "mod_int": 9_1,
    "undefined": sys.maxsize,
    "interrupt": 3,
    "insert": 5_0,
    "delete": 5_1,
    "pg_up": 5_3,
    "pg_down": 5_4,
}

a_   :      List[Any]				    =      KEYMAP["up"]
a_   :      List[Any]				    =      KEYMAP["left"]

if sys.platform == "win32":
 a_   :      Optional[int]				    =      []
 a_   :      Optional[int]				    =      {
     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(1_0):
 a_   :      Any				    =      ord(str(i))






def 		_A			()				->					Optional[int]:




     '''simple docstring'''



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

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

               # If it is a prefix char, get second part
               if ch in (b"\x00", b"\xe0"):
                    _a      =							ch + msvcrt.getch()
                    # Translate actual Win chars to bullet char types
                    try:
                         _a      =							chr(WIN_KEYMAP[cha]						)
                         WIN_CH_BUFFER.append(chr(KEYMAP['mod_int']						)						)
                         WIN_CH_BUFFER.append(lowerCAmelCase__						)
                         if ord(lowerCAmelCase__						) 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_26						)						)
                         _a      =							chr(KEYMAP['esc']						)
                    except KeyError:
                         _a      =							cha[1]
               else:
                    _a      =							ch.decode(lowerCAmelCase__						)
          else:
               _a      =							WIN_CH_BUFFER.pop(0						)
     elif os.name == "posix":
          import termios
          import tty

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






def 		_A			()				->					Any:




     '''simple docstring'''



     _a      =							get_raw_chars()
     if ord(lowerCAmelCase__						) in [KEYMAP["interrupt"], KEYMAP["newline"]]:
          return char

     elif ord(lowerCAmelCase__						) == KEYMAP["esc"]:
          _a      =							get_raw_chars()
          if ord(lowerCAmelCase__						) == KEYMAP["mod_int"]:
               _a      =							get_raw_chars()
               if ord(lowerCAmelCase__						) >= KEYMAP["arrow_begin"] - ARROW_KEY_FLAG and ord(lowerCAmelCase__						) <= KEYMAP["arrow_end"] - ARROW_KEY_FLAG:
                    return chr(ord(lowerCAmelCase__						) + 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'''






def 		_A			(lowerCAmelCase__					:list						)				->					float:




     '''simple docstring'''



     _a      =							0
     while len(lowerCAmelCase__						) > 1:
          _a      =							0
          # Consider two files with minimum cost to be merged
          for _ in range(2						):
               _a      =							files.index(min(lowerCAmelCase__						)						)
               temp += files[min_index]
               files.pop(lowerCAmelCase__						)
          files.append(lowerCAmelCase__						)
          optimal_merge_cost += temp
     return optimal_merge_cost


if __name__ == "__main__":
 import doctest

 doctest.testmod()

