HDU 3974 Assign the task(DFS序+线段树单点查询，区间修改)
摘要：
描述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 leader of whole com 阅读全文
posted @ 2018-07-09 23:32 大桃桃 阅读(534) 评论(0) 推荐(0)
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