This depends on the degree of your deviation. If it is a small problem, it may be regarded as a new angle by the marking teacher, and it is also possible to get high marks. If you don't understand the meaning of the topic clearly, it is estimated that the penalty will be more serious. Generally speaking, it depends on what you write and what the logic is. Then, articles like this should be graded according to structure, content and logic. If the structure is right, it will be relatively graded. The proportion of essay questions at the end of the examination in public institutions is still relatively large. Good luck.