
def  SCREAMING_SNAKE_CASE							(       __UpperCamelCase		, __UpperCamelCase		, __UpperCamelCase		, __UpperCamelCase)      ->					List[Any]:
     a     =				len(__UpperCamelCase), len(grid[0])
     if (
         min(__UpperCamelCase		, __UpperCamelCase) < 0
         or row == row_length
         or col == col_length
         or (row, col) in visit
         or grid[row][col] == 1
     ):
          return 0
     if row == row_length - 1 and col == col_length - 1:
          return 1

     visit.add((row, col))

     a     =				0
     count += depth_first_search(__UpperCamelCase		, row + 1		, __UpperCamelCase		, __UpperCamelCase)
     count += depth_first_search(__UpperCamelCase		, row - 1		, __UpperCamelCase		, __UpperCamelCase)
     count += depth_first_search(__UpperCamelCase		, __UpperCamelCase		, col + 1		, __UpperCamelCase)
     count += depth_first_search(__UpperCamelCase		, __UpperCamelCase		, col - 1		, __UpperCamelCase)

     visit.remove((row, col))
     return count


if __name__ == "__main__":
   import doctest

   doctest.testmod()







import math

def  SCREAMING_SNAKE_CASE							(       __UpperCamelCase)      ->					bool:

     if 1 < number < 4:
          # 2 and 3 are primes
          return True
     elif number < 2 or number % 2 == 0 or number % 3 == 0:
          # Negatives, 0, 1, all even numbers, all multiples of 3 are not primes
          return False

     # All primes number are in format of 6k +/- 1
     for i in range(5		, int(math.sqrt(__UpperCamelCase) + 1)		, 6):
          if number % i == 0 or number % (i + 2) == 0:
               return False
     return True

def  SCREAMING_SNAKE_CASE							(       __UpperCamelCase = 0.1)      ->					int:
     a     =				3
     a     =				3

     while primes / (2 * j - 1) >= ratio:
          for i in range(j * j + j + 1		, (j + 2) * (j + 2)		, j + 1):
               primes += is_prime(__UpperCamelCase)
          j += 2
     return j


if __name__ == "__main__":
   import doctest

   doctest.testmod()

