Kvant Math Problem 379

I can proceed with this framework, but I need the text of Kvant problem M379 in order to produce a rigorous solution.

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Problem

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

I can proceed with this framework, but I need the text of Kvant problem M379 in order to produce a rigorous solution. Could you provide the problem statement?