2019年8月29日
hdu 3974 Assign the task（dfs序上线段树）
摘要： Problem Description There is a company that has N employees(numbered from 1 to N),every employee in the company has a immediate boss (except for the l 阅读全文
posted @ 2019-08-29 20:45 WAKBGAN 阅读(170) 评论(0) 推荐(0) 编辑