• Welcome to the world's largest Chinese hacker forum

    Welcome to the world's largest Chinese hacker forum, our forum registration is open! You can now register for technical communication with us, this is a free and open to the world of the BBS, we founded the purpose for the study of network security, please don't release business of black/grey, or on the BBS posts, to seek help hacker if violations, we will permanently frozen your IP and account, thank you for your cooperation. Hacker attack and defense cracking or network Security

    business please click here: Creation Security  From CNHACKTEAM

Recommended Posts

冲刺国赛5月2日第二场

\(t1\)我沉迷于前缀无法自拔。我觉得扫描线是离散的位置,很难修改。没想到零只多了一点点。

\(t2\)正在考虑回滚Mo团队,但是撤队操作不会处理好,不理解随机意图.

\(t3\)不友好和\ (FWT \).

A. a

可以推出以\(i\)为右端点的最远左端点。虽然修改的位置是离散的,但是只有两个\(01\),用段树就可以轻松维护(我白学了半天段树)。

B. b

通过将查询分成多个具有完整间隔的序列,我们可以找到\(\sqrt n\)的数目

对于每一个,只需运行吉老师的截面树即可。

Link to comment
Share on other sites