### -> -> -> USER: P0 def longest_valid_parentheses(s: str) -> int: stack = [] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if (n := len(stack)) > 1: ch = s[stack.pop()] if ch == char: max_length = max(max_length, len(stack)) stack = [] else: return max_length return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P1 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: if s[stack[-1]] == '(': stack.pop() max_length = max(i - stack[-1], max_length) else: stack[-1] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P2 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: # TODO: fill this part # TODO: fill this part if s[stack[-1]] == '(': max_length += 2 else: # TODO: fill this part max_length = 0 return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P3 def longest_valid_parentheses(s: str) -> int: stack = [] max_length = 0 curr_max = 0 for i in range(len(s)): char = s[i] if char == "(": s.append(char) elif char == ")": if len(stack) > 1: if stack[-1] == "(": curr_max else: curr_max = None if curr_max > max_length and curr_max is not None: max_length = curr_max return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P4 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() else: max_length = max(max_length, i - stack[-1]) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P5 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": stack.pop() if len(stack) > 0: current_length = i - stack[-1] max_length = max(max_length, current_length) else: stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P6 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i - stack[-1]) else: stack[0] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P7 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": elif char == ")": if len(stack) > 1: # TODO: fill this part # TODO: fill this part else: # TODO: fill this part return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P8 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(char) max_length += 1 elif char == ")": if len(stack) > 1: stack.append(char) if stack.pop() == "(": max_length += 1 else: return max_length return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P9 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() tmp = i - stack[-1] max_length = max(max_length, tmp) else: stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P10 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(char) elif char == ")": if len(stack) > 1: stack.pop() max_length += 2 else: stack[-1] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P11 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": # TODO: fill this part stack.append(i) elif char == ")": if len(stack) > 1: # TODO: fill this part index = stack.pop() if s[index] == "(": max_length = max(max_length, i - index + 1) else: # TODO: fill this part return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P12 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: max_length = max(max_length, i - stack[-1] + 1) temp = stack[:] else: stack[-1] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P13 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: last_bracket = s[stack.pop()] if last_bracket == '(': max_length = max(max_length, i - stack[-1]) else: stack[-1] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P14 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i - stack[-1]) else: stack[0] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P15 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(char) elif char == ")": if len(stack) > 1: stack.pop() max_length += 1 else: stack[-1] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P16 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) # TODO: fill this part elif char == ")": if len(stack) > 1: max_length = max(i - stack.pop(), max_length) # TODO: fill this part # TODO: fill this part else: # TODO: fill this part return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P17 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": stack.pop() if len(stack) > 0: max_length = max(max_length, i - stack[-1]) else: stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P18 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: length = stack.append - stack.append(0) if length > max_length: max_length = length else: stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P19 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: index = stack.pop() max_length = max(max_length, i - index + 1) else: pass return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P20 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(char) elif char == ")": if len(stack) > 1: if stack[-1] == '(': stack.pop() max_length += 2 else: return False return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P21 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(char) elif char == ")": if len(stack) > 1: if stack.pop() == '(': max_length += 2 else: # TODO: fill this part return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P22 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": # TODO: fill this part stack.append(i) elif char == ")": if len(stack) > 1: # TODO: fill this part stack.pop() max_length = max(max_length, i - stack[-1]) # TODO: fill this part else: # TODO: fill this part stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P23 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: # there were some logical checks here, but I cannot remember if stack[-1] == -1: return False stack.pop() max_length = (max_length, stack[-1] - i) else: stack[-1] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P24 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i - stack[-1]) else: stack.pop() stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P25 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: if stack[-1] != -1 and s[stack[-1]] == '(': stack.pop() max_length = max(max_length, i - stack[-1]) else: stack[-1] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P26 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append('(') elif char == ")": if len(stack) > 1: if stack.pop() == '(': max_length += 1 # TODO: fill this part else: # TODO: fill this part return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P27 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: popped = stack.pop() if i - popped > max_length: max_length = i - popped + 1 else: pass return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P28 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i - stack[-1]) else: stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P29 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i - stack[-1]) else: stack[-1] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P30 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i)# TODO: fill this part elif char == ")": if len(stack) > 1: stack.pop(-1)# TODO: fill this part max_length = max(max_length, i - stack[-1])# TODO: fill this part else: pass# TODO: fill this part return max_length print(longest_valid_parentheses(")()())")) assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P31 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": max_length += 1 elif char == ")": if len(stack) > 1: # TODO: fill this part # TODO: fill this part else: return 0 return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P32 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i-stack[-1]) else: stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P33 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": stack.pop() if len(stack) > 0: max_length = max(max_length, i - stack[-1]) else: stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P34 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(char) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i) else: stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P35 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i - stack[-1]) else: stack.append(i) stack.pop(0) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P36 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i - stack[-1]) else: i = stack[-1] return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P37 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: max_length = max(max_length, i - stack[-1]) stack.pop() else: pass return max_length + 1 print(longest_valid_parentheses(")()())")) assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P38 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": # TODO: fill this part stack.append(i) elif char == ")": if len(stack) > 1: # TODO: fill this part stack.pop(-1) # TODO: fill this part max_length += 1 else: # TODO: fill this part max_length -= 1 return max_length print(longest_valid_parentheses("(()")) print(longest_valid_parentheses(")()())")) print(longest_valid_parentheses("((())(()")) print(longest_valid_parentheses("()(())))")) # assert longest_valid_parentheses("(()") == 2 # assert longest_valid_parentheses(")()())") == 4 # assert longest_valid_parentheses("((())(()") == 4 # assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P39 def longest_valid_parentheses(s: str) -> int: map = {"(": ")", "[": "]", "{": "}"} stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i - stack[-1]) # TODO: fill this part # TODO: fill this part else: stack[0] = i return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P40 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: stack.pop() max_length = max(max_length, i - stack[-1]) else: stack = [i] return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ############## ### -> -> -> USER: P41 def longest_valid_parentheses(s: str) -> int: stack = [-1] max_length = 0 for i in range(len(s)): char = s[i] if char == "(": stack.append(i) elif char == ")": if len(stack) > 1: max_length = max(max_length, i - stack[-1]) else: stack.append(i) return max_length assert longest_valid_parentheses("(()") == 2 assert longest_valid_parentheses(")()())") == 4 assert longest_valid_parentheses("((())(()") == 4 assert longest_valid_parentheses("()(())))") == 6 ##############