



from __future__ import annotations

__SCREAMING_SNAKE_CASE           =  list[list[int]]

# assigning initial values to the grid
__SCREAMING_SNAKE_CASE           =  [
    [3, 0, 6, 5, 0, 8, 4, 0, 0],
    [5, 2, 0, 0, 0, 0, 0, 0, 0],
    [0, 8, 7, 0, 0, 0, 0, 3, 1],
    [0, 0, 3, 0, 1, 0, 0, 8, 0],
    [9, 0, 0, 8, 6, 3, 0, 0, 5],
    [0, 5, 0, 0, 9, 0, 6, 0, 0],
    [1, 3, 0, 0, 0, 0, 2, 5, 0],
    [0, 0, 0, 0, 0, 0, 0, 7, 4],
    [0, 0, 5, 2, 0, 6, 3, 0, 0],
]

# a grid with no solution
__SCREAMING_SNAKE_CASE           =  [
    [5, 0, 6, 5, 0, 8, 4, 0, 3],
    [5, 2, 0, 0, 0, 0, 0, 0, 2],
    [1, 8, 7, 0, 0, 0, 0, 3, 1],
    [0, 0, 3, 0, 1, 0, 0, 8, 0],
    [9, 0, 0, 8, 6, 3, 0, 0, 5],
    [0, 5, 0, 0, 9, 0, 6, 0, 0],
    [1, 3, 0, 0, 0, 0, 2, 5, 0],
    [0, 0, 0, 0, 0, 0, 0, 7, 4],
    [0, 0, 5, 2, 0, 6, 3, 0, 0],
]




def 	UpperCAmelCase   (						_lowerCamelCase ,    _lowerCamelCase ,    _lowerCamelCase ,    _lowerCamelCase    ):
			for i in range(9    ):
						if grid[row][i] == n or grid[i][column] == n:
									return False

			for i in range(3    ):
						for j in range(3    ):
									if grid[(row - row % 3) + i][(column - column % 3) + j] == n:
												return False

			return True




def 	UpperCAmelCase   (						_lowerCamelCase    ):
			for i in range(9    ):
						for j in range(9    ):
									if grid[i][j] == 0:
												return i, j
			return None




def 	UpperCAmelCase   (						_lowerCamelCase    ):
			if location := find_empty_location(_lowerCamelCase    ):
						A       , A							:					Tuple              =						location
			else:
						# If the location is ``None``, then the grid is solved.
						return grid

			for digit in range(1 ,    10    ):
						if is_safe(_lowerCamelCase ,    _lowerCamelCase ,    _lowerCamelCase ,    _lowerCamelCase    ):
									A							:					List[Any]              =						digit

									if sudoku(_lowerCamelCase    ) is not None:
												return grid

									A							:					List[str]              =						0

			return None




def 	UpperCAmelCase   (						_lowerCamelCase    ):
			for row in grid:
						for cell in row:
									print(_lowerCamelCase ,    end=" "    )
						print()


if __name__ == "__main__":
							# make a copy of grid so that you can compare with the unmodified grid
							for example_grid in (initial_grid, no_solution):
														print("""\nExample grid:\n""" + """=""" * 20)
														print_solution(example_grid)
														print("""\nExample grid solution:""")
														__SCREAMING_SNAKE_CASE           =  sudoku(example_grid)
														if solution is not None:
																					print_solution(solution)
														else:
																					print("""Cannot find a solution.""")




from dataclasses import dataclass, field
from typing import ClassVar, Dict

from ..features import Features, Sequence, Value
from .base import TaskTemplate

@dataclass(frozen=_A						)
class 	lowerCamelCase_    ( _A						):






						'''simple docstring'''
						# `task` is not a ClassVar since we want it to be part of the `asdict` output for JSON serialization
						a__   =  field(default="question-answering-extractive"						,metadata={"include_in_asdict_even_if_is_default": True}						)
						a__   =  Features({"question": Value("string"						), "context": Value("string"						)}						)
						a__   =  Features(
						    {
						        "answers": Sequence(
						            {
						                "text": Value("string"						),
						                "answer_start": Value("int32"						),
						            }						)
						    }						)
						a__   =  "question"
						a__   =  "context"
						a__   =  "answers"







						@property
						def 			SCREAMING_SNAKE_CASE__		(	self      :			Union[str, Any] )      ->				Dict[str, str]:
									return {self.question_column: "question", self.context_column: "context", self.answers_column: "answers"}