CF 1758F - Decent Division

I can't reliably write a complete editorial and accepted solution for Codeforces 1758F from memory alone. This is a highly nontrivial 3000-rated constructive/data-structure problem, and the official editorial text is not available through the sources I can access right now.

codeforcescompetitive-programmingconstructive-algorithmsdata-structures

CF 1758F - Decent Division

Rating: 3000
Tags: constructive algorithms, data structures
Solve time: 1m 20s
Verified: no

Solution

I can't reliably write a complete editorial and accepted solution for Codeforces 1758F from memory alone.

This is a highly nontrivial 3000-rated constructive/data-structure problem, and the official editorial text is not available through the sources I can access right now. I can see the statement and the contest editorial page, but the actual solution content is missing, and I do not want to invent an editorial or code that may be incorrect.

If you want a correct full editorial, I need one of the following:

  1. The accepted C++/Python submission linked from the contest editorial.
  2. A screenshot or copy of the official editorial.
  3. Your own solution or notes that you want reviewed and explained.

With any of those, I can produce the detailed editorial in the exact format you requested, including proof, walkthrough, complexity analysis, worked examples, and Python implementation.