DP k-th lexicographical string

Правка en1, от wish_me, 2018-01-21 02:20:29

Hello All, While reading http://codeforces.com/blog/entry/325 blog advance section I saw problems of the topic k-th lexicographical string but all are from codah.club,Can any one of you suggest me some Interesting k-th lexicographical string problems on codeforces.

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en1 Английский wish_me 2018-01-21 02:20:29 297 Initial revision (published)