cut = cut->front;
        cut->back = cut->back->back;
        cut = cut->back;
        cut->front = cut->front->front;
        ```
        看不懂很痛苦呜呜qnq救救孩子吧cut=cut->front了都为啥cut指针没变啊啊.......痛苦了家人们救救孩子吧