


'''simple docstring'''

import os
import string
import sys


lowerCamelCase				:  Union[str, Any]    		=      1 << 8

lowerCamelCase				:  Optional[int]    		=      {
    '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,
}

lowerCamelCase				:  Optional[int]    		=      KEYMAP['up']
lowerCamelCase				:  List[Any]    		=      KEYMAP['left']

if sys.platform == "win32":
 lowerCamelCase				:  Optional[Any]    		=      []
 lowerCamelCase				:  Any    		=      {
     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):
 lowerCamelCase				:  Dict    		=      ord(str(i))

def _SCREAMING_SNAKE_CASE ()			->			List[str]:






       """simple docstring"""







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

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

                     # If it is a prefix char, get second part
                     if ch in (b"\x00", b"\xe0"):
                            lowercase__      =					ch + msvcrt.getch()
                            # Translate actual Win chars to bullet char types
                            try:
                                   lowercase__      =					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(126			)			)
                                   lowercase__      =					chr(KEYMAP['''esc''']			)
                            except KeyError:
                                   lowercase__      =					cha[1]
                     else:
                            lowercase__      =					ch.decode(A			)
              else:
                     lowercase__      =					WIN_CH_BUFFER.pop(0			)
       elif os.name == "posix":
              import termios
              import tty

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

def _SCREAMING_SNAKE_CASE ()			->			Optional[int]:






       """simple docstring"""







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

       elif ord(A			) == KEYMAP["esc"]:
              lowercase__      =					get_raw_chars()
              if ord(A			) == KEYMAP["mod_int"]:
                     lowercase__      =					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

lowerCamelCase				:  List[str]    		=      []

def _SCREAMING_SNAKE_CASE (A    ,					A    ,					A			)			->			bool:






       """simple docstring"""







       for i in range(len(A			)			):
              if board[row][i] == 1:
                     return False
       for i in range(len(A			)			):
              if board[i][column] == 1:
                     return False
       for i, j in zip(range(A    ,					-1    ,					-1			)    ,					range(A    ,					-1    ,					-1			)			):
              if board[i][j] == 1:
                     return False
       for i, j in zip(range(A    ,					-1    ,					-1			)    ,					range(A    ,					len(A			)			)			):
              if board[i][j] == 1:
                     return False
       return True

def _SCREAMING_SNAKE_CASE (A    ,					A			)			->			bool:






       """simple docstring"""







       if row >= len(A			):
              solution.append(A			)
              printboard(A			)
              print()
              return True
       for i in range(len(A			)			):
              if is_safe(A    ,					A    ,					A			):
                     lowercase__      =					1
                     solve(A    ,					row + 1			)
                     lowercase__      =					0
       return False

def _SCREAMING_SNAKE_CASE (A			)			->			None:






       """simple docstring"""







       for i in range(len(A			)			):
              for j in range(len(A			)			):
                     if board[i][j] == 1:
                            print('''Q'''    ,					end=''' '''			)
                     else:
                            print('''.'''    ,					end=''' '''			)
              print()


# n=int(input("The no. of queens"))
lowerCamelCase				:  Optional[Any]    		=      8
lowerCamelCase				:  Optional[int]    		=      [[0 for i in range(n)] for j in range(n)]
solve(board, 0)

print('The total no. of solutions are :', len(solution))




