LCS2 - Longest Common Substring II


A string is finite sequence of characters over a non-empty finite set Σ.

In this problem, Σ is the set of lowercase letters.

Substring, also called factor, is a consecutive sequence of characters occurrences at least once in a string.

Now your task is a bit harder, for some given strings, find the length of the longest common substring of them.

Here common substring means a substring of all the considered strings.

Input

The input contains at most 10 lines, each line consists of no more than 100000 lowercase letters, representing a string.

Output

The length of the longest common substring. If such string doesn't exist, print "0" instead.

Example

Input:
alsdfkjfjkdsal
fdjskalajfkdsla
aaaajfaaaa

Output:
2

Notice: new testcases added


hide comments
ekatsim: 2024-08-19 16:12:16

Use hash and binary search can get AC!

sleepntsheep: 2024-02-18 11:37:10

crazy time limit

richardlau08: 2023-10-05 11:57:04

O(n log n) SA can get AC,even with gcc,but it's not easy because of the time limit.

awolf: 2023-06-14 10:34:29

SAM get WA on #test 10, I find it because of char

char c= 'a' + 27+4;
(int) ( c ) equals -128 ,resulting in RE

oier12345: 2021-04-14 07:35:37

good luck!

Leandro Vianna: 2020-11-28 22:42:25

I got TLE with gcc but AC with clang. O(n lg n).

ablondal: 2020-08-25 21:03:02

Solved with O(nlogn) suffix array and O(nlogn) post-processing, but only using clang compiler, got TLE with gcc...

Last edit: 2020-08-25 21:03:38
shefin: 2019-05-22 00:23:50

AC with O(n) Suffix Array. Time limit is so strict. Any extra log factor while traversing the LCP array gives TLE. I've used a deque while traversing the LCP array for finding the ans.

harolinch: 2018-07-29 10:26:13

time limit is bullshit, comon, increase it some

Last edit: 2018-07-29 10:26:45
xzy: 2018-06-15 16:01:31

Can I use "while(scanf("%s",ch))!=EOF)" for input?
It was always TLE...


Added by:Bin Jin
Date:2007-09-24
Time limit:1s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ASM64 CPP