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唐甜甜、阮绵绵、高晓晓、崔梅子等四人是某音乐学院同一宿舍的大四女生，在这大学时代最后的一个冬季，将注定是不平静的，也会留给她们永不磨灭的友情记忆。若是换个人，杨长帆独揽大权，主公怕是早就急了，可汪滶杨长帆之间，却是半点裂隙也不曾有过。患有艾斯伯格综合征（一种较轻的自闭症）的11个的月修直（龙品旭 饰）第一个记忆是听见田桂芳（张静初 饰）叫“修直”，然后笑了。修直第一次思想——他真是修直还是长得像修直？乖乖女尹镰终于鼓起勇气向青梅竹马的宫风曜告白，却得到一个模棱两可的答复。是告白的时机不对？还是自己不够优秀？无论如何，暗恋宫风曜多年的她并不想放弃。然而这场未果的告白没过久，另一场突如其来的高调告白将尹镰原本平静的生活彻底打破……电影讲述了几个初涉社会的大学生窘迫、挫败的人生经历，他们中的美女校花为追求歌星之路被富人包养；富二代公子哥因家庭破产自谋生路；校园学霸只能从事送外卖的苦差事……昔日的天之骄子皆成社会底层的草根，他们在冷漠、残酷的现实中不甘沉沦，抚平伤痛，走上艰辛崎岖的创业之路。The Publish-Subscribe Model in Real Life;The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu