摘要: 题目描述 For a string \(x\) ,Bobo define \(x^{\infty}\) =xxx,,,which is x repeats for infinite times ,resulting in a string of infinite length. Bobo has t 阅读全文
posted @ 2020-07-14 16:27 ice--cream 阅读(249) 评论(0) 推荐(2) 编辑