[hdu 3068|http://acm.hdu.edu.cn/showproblem.php?pid=3068] Algorithm:http...

樹鏈剖分水題[https://www.bilibili.com/video/av4482146/]DFS1 DFS2 Find

[2017/3/5/-2017/3/11] Codeforces #403 Div 2 Prob B n 個(gè)人在意直線上吃型，位置為x_i ,最大速...