Fake News (hard)
题意翻译
$T$ 组数据,
对于字符串 $s$ 求 $\sum_p cnt(s,p)^2$。
其中 $cnt_{s,p}$ 表示子串 $p$ 在 $s$ 中的出现次数。
$|s|\le 10^5,T\le 10$
题目描述
Now that you have proposed a fake post for the HC $ ^{2} $ Facebook page, Heidi wants to measure the quality of the post before actually posting it. She recently came across a (possibly fake) article about the impact of fractal structure on multimedia messages and she is now trying to measure the self-similarity of the message, which is defined as
![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF802I/cdbfdfc02921b55d94f8e9715364be36292f81c3.png)where the sum is over all nonempty strings $ p $ and ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF802I/aea1d5f3b9f7520d94fcc0daea05a447b5429c82.png) is the number of occurences of $ p $ in $ s $ as a substring. (Note that the sum is infinite, but it only has a finite number of nonzero summands.)
Heidi refuses to do anything else until she knows how to calculate this self-similarity. Could you please help her? (If you would like to instead convince Heidi that a finite string cannot be a fractal anyway – do not bother, we have already tried.)
输入输出格式
输入格式
The input starts with a line indicating the number of test cases $ T $ ( $ 1<=T<=10 $ ). After that, $ T $ test cases follow, each of which consists of one line containing a string $ s $ ( $ 1<=|s|<=100000 $ ) composed of lowercase letters (a-z).
输出格式
Output $ T $ lines, every line containing one number – the answer to the corresponding test case.
输入输出样例
输入样例 #1
4
aa
abcd
ccc
abcc
输出样例 #1
5
10
14
12
说明
A string $ s $ contains another string $ p $ as a substring if $ p $ is a contiguous subsequence of $ s $ . For example, ab is a substring of cab but not of acb.