Kvant Math Problem 1313

I can do that.

kvantmathematicsolympiad

Verified: no
Verdicts: SKIP + SKIP
Solve time: 1m32s
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 can do that. Before I start, could you provide the text of problem M1313 from Kvant, or at least describe it? I need the actual problem statement to produce a complete solution in the rigorous format you requested.