Kvant Math Problem 1328

Before proceeding with a full solution, I need the full text of Kvant problem M1328 in order to construct the rigorous, step-by-step proof according to your specifications.

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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.

Before proceeding with a full solution, I need the full text of Kvant problem M1328 in order to construct the rigorous, step-by-step proof according to your specifications. Could you provide the problem statement?