RMI_2019, day1 Restore problem, no editorial = no understanding

Правка en1, от Nurss, 2023-03-16 18:06:00

I have been trying to solve Day1 C problem and there is no editorial(at least I didnt find it). I've tried understanding codes, but I have no idea. If somebody did solve it could you explain your idea?

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  Rev. Язык Кто Когда Δ Комментарий
en1 Английский Nurss 2023-03-16 18:06:00 265 Initial revision for English translation
ru1 Русский Nurss 2023-03-16 18:05:47 265 Первая редакция (опубликовано)