





'''simple docstring'''


from __future__ import annotations

_SCREAMING_SNAKE_CASE	 =							[]


def 	__a(SCREAMING_SNAKE_CASE_  :					str		,       SCREAMING_SNAKE_CASE_  :					List[Any]		,       SCREAMING_SNAKE_CASE_  :					Union[str, Any]    ):



    '''simple docstring'''





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


def 	__a(SCREAMING_SNAKE_CASE_  :					Optional[Any]		,       SCREAMING_SNAKE_CASE_  :					Tuple    ):



    '''simple docstring'''





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


def 	__a(SCREAMING_SNAKE_CASE_  :					List[Any]    ):



    '''simple docstring'''





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


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





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









'''simple docstring'''


from __future__ import annotations


def 	__a(SCREAMING_SNAKE_CASE_  :					float		,       SCREAMING_SNAKE_CASE_  :					float		,       SCREAMING_SNAKE_CASE_  :					float    ):



    '''simple docstring'''





    if (voltage, current, resistance).count(0    ) != 1:
        raise ValueError("One and only one argument must be 0"    )
    if resistance < 0:
        raise ValueError("Resistance cannot be negative"    )
    if voltage == 0:
        return {"voltage": float(current * resistance    )}
    elif current == 0:
        return {"current": voltage / resistance}
    elif resistance == 0:
        return {"resistance": voltage / current}
    else:
        raise ValueError("Exactly one argument must be 0"    )


if __name__ == "__main__":
       import doctest

       doctest.testmod()


