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+%22%22%22Leetcode 301. Remove Invalid Parentheses%0AHard%0A%0AURL: https://leetcode.com/problems/remove-invalid-parentheses/%0A%0ARemove the minimum number of invalid parentheses in order to make the input string%0Avalid. Return all possible results.%0A%0ANote: The input string may contain letters other than the parentheses ( and ).%0A%0AExample 1:%0AInput: %22()())()%22%0AOutput: %5B%22()()()%22, %22(())()%22%5D%0A%0AExample 2:%0AInput: %22(a)())()%22%0AOutput: %5B%22(a)()()%22, %22(a())()%22%5D%0A%0AExample 3:%0AInput: %22)(%22%0AOutput: %5B%22%22%5D%0A%22%22%22%0A%0Aclass Solution(object):%0A    def removeInvalidParentheses(self, s):%0A        %22%22%22%0A        :type s: str%0A        :rtype: List%5Bstr%5D%0A        %22%22%22%0A        pass%0A%0A%0Adef main():%0A    pass%0A%0A%0Aif __name__ == '__main__':%0A    main()%0A

Add lc0301_remove_invalid_parentheses.py