Is it incompletely described? Or it is me? [problem from another OJ]

Revision en8, by MahmoudAlio, 2018-01-01 22:59:56

Hello everyone!

Yesterday I read this problem (, and after that, it showed to me that there is a waste of some information that the solver needs to solve it.

But, surely, several unaccessible accepted submissions, made me incline to accuse my understanding.

So I, gratefully, hope you to help me in this problem.

After you read the problem statement, see this please:

Are there, in the statement, expressions that describe the whole way to construct the expansion string from the poly-line ( initial ) string? I saw that there is not enough clear explanation for it. So, all of the ways are considered true, but according to the examples, not all of the ways to construct the expansion string are accepted!!. Thanks in advance.

Tags help, ambiguous


  Rev. Lang. By When Δ Comment
en8 English MahmoudAlio 2018-01-01 22:59:56 24
en7 English MahmoudAlio 2018-01-01 22:57:09 86
en6 English MahmoudAlio 2017-12-31 19:07:01 5 Tiny change: 'hat there are waste of ' -> 'hat there is a waste of '
en5 English MahmoudAlio 2017-12-31 19:03:20 8 Tiny change: '\n\nSo I, thankfully, hop' -> '\n\nSo I, gratefully, hop'
en4 English MahmoudAlio 2017-12-31 17:46:15 6
en3 English MahmoudAlio 2017-12-31 17:17:19 6
en2 English MahmoudAlio 2017-12-31 17:15:23 2 Tiny change: 'veryone!\nYesterda' -> 'veryone!\n\nYesterda'
en1 English MahmoudAlio 2017-12-31 17:14:20 782 Initial revision (published)