Question about 1 problem on Lightoj

Правка en1, от wonderful_trip, 2021-07-12 04:57:34

I'm training on Lightoj. And I have trouble in post: https://lightoj.com/problem/politeness. Can anyone give me an idea to solve this problem?

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en1 Английский wonderful_trip 2021-07-12 04:57:34 177 Initial revision (published)