提供主界面，选择选项进入不同的分菜单，根据选项执行分菜单的内容。且各种功能操作以独立的函数为基础，通过调用函数实现对分数的最简化运算。- Provides the main interface, select the option to enter different menus, according to the contents of the menu options to perform points. And various functions on the basis of the