Kvant Math Problem 1440

I can write the solution as requested, but I need the full text of Kvant problem M1440 in order to proceed.

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Problem

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

I can write the solution as requested, but I need the full text of Kvant problem M1440 in order to proceed. Could you provide the problem statement?