Help with Hackerearth problem

Правка en1, от pronoobchamploser, 2020-08-01 16:27:38

Can somebody please explain how to solve this problem?

Editorial is horrible and it's impossible to understand how it's solved.

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en2 Английский pronoobchamploser 2020-08-01 17:24:30 11 Tiny change: ''s solved.' -> ''s solved.\n\nThanks.'
en1 Английский pronoobchamploser 2020-08-01 16:27:38 255 Initial revision (published)