复习下四种算法
树剖:
https://ac.nowcoder.com/acm/problem/20449
https://ac.nowcoder.com/acm/problem/18939
cdq分治:
https://ac.nowcoder.com/acm/problem/19881
点分治:
https://www.luogu.com.cn/problem/P4886
https://codeforces.com/contest/321/problem/C
https://ac.nowcoder.com/acm/contest/11171/D
dsu on tree:
https://www.luogu.com.cn/problem/CF375D
https://nanti.jisuanke.com/t/42586
lpt的小屋 文章被收录于专栏
我想要一份甜甜的爱情