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[hdu 3068|http://acm.hdu.edu.cn/showproblem.php?pid=3068] Algorithm:http...
树链剖分水题[https://www.bilibili.com/video/av4482146/]DFS1 DFS2 Find
[2017/3/5/-2017/3/11] Codeforces #403 Div 2 Prob B n 个人在意直线上,位置为x_i ,最大速...