I have been engaged in ACM for a year, and I don't know how much it has gained in the end. I can say that this year has never been used up. Maybe, it can be said that it is very fulfilling. To be honest, people like me are engaged in ACM to get a prize and to enter word final for an unattainable prize. However, in reality, everything is often not that easy, everything is so difficult, but in turn, if so, so easy, what is the purpose? In the past year, I have made too many types of questions. Anyway, I want to learn all the algorithms and the names I have heard. However, in actual use, the problem is not so satisfactory, because the problem is really changeable. If all of them are just an understanding, and they can't even meet the problem, then what is the use of such an understanding? On the contrary, even if I learned only a few algorithms, but I could use them flexibly, wouldn't it be better? I think I am too anxious and I always think I understand it, but when we encounter a real problem, we have no idea. What is the significance of doing so? This is also a weakness in learning methods. From now on, we have to perform specialized classification training, so we can't think of any more! Think about it. There are not many achievements in the past year, and there are no outstanding achievements. However, it is really a shame that many people around me call it a great god! You must be self-aware. what others say is nothing. What really deserves is your own thoughts! Sometimes, I do have the idea of quitting my team. When I encounter many defeats and quarrel with my teammates, I have an idea of disbanding a team, this is not an escape. If you encounter difficulties, you will not think about how to solve them. Instead, you will be an impulsive quarrel. You will not dare to admit your own shortcomings and complain about others, how is this different from a coward? It doesn't matter. Let's start from the beginning. All the knowledge needs to become a system. We need to step by step to become a master, not a rookie forever! Maybe one year later, we will have a different idea-a year of reflection