# class Book(object): # # 定义类的参数 # def __init__(self, book_id, book_name, book_store_count): # self.book_id = book_id # self.book_name = book_name # self.book_store_count = book_store_count # # 定义加法操作 # def __add__(self, book): # return self.book_store_count + book.book_store_count # store_count = Book(1, 'python入门书', 100) + Book(2, '机器学习入门书', 200) # print(store_count) k = int(input()) print(f"I just input: {k}")