Says
[ABC141E] Who Says a Pun?
[Who Says a Pun の 传送门](https://www.luogu.com.cn/problem/AT_abc141_e) 看到两个**完全相同的子串**，考虑 dp。 设 $f_{i,j}$ 为从第 $i$ 项和第 $j$ 项开始的最长相同子串，则有 $s_i=s_j$ 时，$f_{ ......
English Learning Articles 2023-06-08 Multiple insomnia symptoms raise stroke risk in people under 50, study says
Multiple insomnia symptoms raise stroke risk in people under 50, study says If you have trouble falling asleep or staying asleep, wake up too early mo ......
English Learning Articles 2023-06-07 Nonsurgical cat contraception could help curb overpopulation, study says
Nonsurgical cat contraception could help curb overpopulation, study says There are an estimated 600 million domestic cats in the world, and 80% of the ......