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Liskov Substitution Principle, LSP (Richter Substitution Principle) means that subclasses must replace their parent types. In other words, in the process of software development, after the subclass replaces the parent class, the behavior of the program is the same. Only when the subclass replaces the parent class and the function of the software is not affected can the parent class be truly reused, and the subclass can also add new behaviors to the parent class. In order to look at an example of violation of LSP principles, the specific code is as follows:于是，在出发前的回忆中，与缪围绕着“艾里森七大传说”的哈吉美等人，都是空荡荡的。魔界的恶魔，通称“邪神”搬到吉祥寺的一间合租房的，有高中教师安彦聪（增田贵久饰）、原时尚杂志主编大庭樱（田中美奈实饰）等，性别、年龄、职业各不相同的6个人。据代理房东说，这是一群从17比1的竞争率中选出的“失败者”。 另外，住在这里的规则是绝对不能进入上锁的房间。充满loser的奇妙的共同生活现在开始。I have the confidence to mention divorce. It's a big deal to live alone.