摘要: "题目链接" 思维难度0 实现难度7 建出主席树后用两点的状态减去lca和lca父亲的状态,然后在新树上跑第$k$小 cpp include include include using namespace std; const int MAXN = 100010; const int MAXM = 阅读全文
posted @ 2019-07-16 09:02 Qihoo360 阅读(224) 评论(1) 推荐(0) 编辑
You're powerful!