code: 
  
  
  
  from .stack import Stack
  
  
  
  
  
  
  def 			__lowercase     (				a__     )       ->				bool:
  							__SCREAMING_SNAKE_CASE								=      Stack()
  							__SCREAMING_SNAKE_CASE								=      {'(': ')', '[': ']', '{': '}'}
  							for bracket in parentheses:
  														if bracket in bracket_pairs:
  																					stack.push(lowerCamelCase__     )
  														elif bracket in (")", "]", "}"):
  																					if stack.is_empty() or bracket_pairs[stack.pop()] != bracket:
  																												return False
  							return stack.is_empty()
  
  
  if __name__ == "__main__":
  			from doctest import testmod
  
  			testmod()
  
  			lowerCAmelCase__	:  str 		=['''((()))''', '''((())''', '''(()))''']
  			print('''Balanced parentheses demonstration:\n''')
  			for example in examples:
  						lowerCAmelCase__	:  List[str] 		='''''' if balanced_parentheses(example) else '''not '''
  						print(F'''{example} is {not_str}balanced''')
  
  
  
  
  
  
  
style_context: 
  
  
  
  from itertools import combinations, product
  
  
  
  
  
  
  def 			__lowercase     (				a__							,     a__							,     a__							,     a__     )       ->				bool:
  							if xa == ya == 0 or xa == ya == 0:
  														return False
  							__SCREAMING_SNAKE_CASE								=      xa * xa + ya * ya
  							__SCREAMING_SNAKE_CASE								=      xa * xa + ya * ya
  							__SCREAMING_SNAKE_CASE								=      (xa - xa) * (xa - xa) + (ya - ya) * (ya - ya)
  							return (
  							    a_square + b_square == c_square
  							    or a_square + c_square == b_square
  							    or b_square + c_square == a_square
  							)
  
  
  
  
  
  
  def 			__lowercase     (				a__ = 50     )       ->				int:
  							return sum(
  							    1
  							    for pta, pta in combinations(product(range(limit + 1     )							,     repeat=2     )							,     2     )
  							    if is_right(*a__							,     *a__     )     )
  
  
  if __name__ == "__main__":
  			print(F'''{solution() = }''')
  
  
  
  
  
  
  