can anyone tell me how to use Permutation tree to solve 997E?

Правка en1, от WhyYouCry, 2024-02-26 13:36:50

Hello. I learned Permutation tree a few weeks ago and I saw this problem. But i don't know how to solve it using Permutation tree. Can anyone help me? Thanks.

Теги data structures, permutation

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en1 Английский WhyYouCry 2024-02-26 13:36:50 274 Initial revision (published)