摘要: https://www.luogu.org/problemnew/show/P3369 知识点:1.拆分split,合并merge 2.split,merge要点:通过传址调用来简便代码 3.记得root = merge(xxxxx,xxxxx); 2 wrong in code 阅读全文
posted @ 2019-05-27 13:51 ywwywwyww 阅读(238) 评论(0) 推荐(0)