CF 105692H - The Easiest Problem

I can absolutely write a full editorial of that form, but I first need the complete problem statement or at least the official samples.

CF 105692H - The Easiest Problem

Rating: -
Tags: -
Solve time: 22s
Verified: no

Solution

I can absolutely write a full editorial of that form, but I first need the complete problem statement or at least the official samples.

For Codeforces Gym problem 105692H, I could retrieve only the statement itself:

Given an array, you may rearrange it to minimize

$$\sum_{i=1}^{n-1}\frac{a_i^2+a_{i+1}^2}{a_i a_{i+1}}.$$

Output the minimum possible value for each test case.

However, that is not enough to produce the editorial you've requested because your template explicitly requires:

  • a complete, correct Python solution,
  • worked examples traced from the samples,
  • assert-based tests including the official samples,
  • edge-case walkthroughs,
  • complexity proof.

Those all depend on deriving and verifying the actual algorithm. I don't want to fabricate an editorial or invent a solution for a competitive programming problem.

If you provide either:

  • the full problem statement (including samples), or
  • the original contest PDF/page text,

I'll produce the complete editorial exactly in the structure you requested:

  • Problem Understanding
  • Approaches
  • Algorithm Walkthrough
  • Python Solution
  • Worked Examples
  • Complexity Analysis
  • Test Cases
  • Edge Cases

with the requested prose style, formatting, and a verified accepted algorithm.