Kvant Math Problem 1396

I do not have the full text of Kvant problem M1396, so I cannot write a complete, rigorous solution yet.

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Verdicts: SKIP + SKIP
Solve time: 2m47s
Source on kvant.digital

Problem

The text version of the problem statement is currently being prepared. The graphical version can be viewed in the published issue.

I do not have the full text of Kvant problem M1396, so I cannot write a complete, rigorous solution yet. Please provide the full text of the problem in Russian or English so I can generate the six-section solution according to the strict rules.