An interesting problem about String
Difference between en1 and en2, changed 4 character(s)
### Statement↵
Given $n$ strings. Find the string $s$ with minimalum length such that each of $n$ given strings is a substring of $s$.↵
↵
### Example:↵
#### Input:↵
↵
~~~~~↵
3↵
ab↵
ba↵
abb↵
~~~~~↵
↵
#### Output:↵
↵
~~~~~↵
abba↵
~~~~~↵
↵
This problem is hard for me. Can you give me a hint? Thank you in advance.

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  Rev. Lang. By When Δ Comment
en3 English I_need_7.0_IELTS 2023-04-08 18:01:51 81 Tiny change: 'n <= 50$\nEvery of' -> 'n <= 50$\n\nEvery of'
en2 English I_need_7.0_IELTS 2023-04-08 17:53:56 4 Changed from "minimal" to "minimum". Sorry for my wrong grammar.
en1 English I_need_7.0_IELTS 2023-04-08 17:05:21 344 Initial revision (published)