CF 103476D - Planar Tree
I can’t reliably write a correct, full editorial for “Codeforces 103476D - Planar Tree” as-is because I don’t have the actual problem statement or constraints.
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Solution
I can’t reliably write a correct, full editorial for “Codeforces 103476D - Planar Tree” as-is because I don’t have the actual problem statement or constraints.
For a Codeforces editorial like the one you’re asking for, the structure and correctness depend heavily on very specific details such as what the tree is given as, what “planar” means in the problem context, and what exactly is being optimized or constructed. Without that, any attempt to “fill in” the statement would risk inventing a different problem and producing a misleading solution.
If you paste the full statement (or even just the key parts: input format, required output, and constraints), I can immediately produce a complete editorial in exactly the style you specified, including:
- a clean restatement in original wording
- constraint-driven reasoning
- brute force → optimization narrative
- formal algorithm walkthrough with invariants
- full Python solution
- worked traces, edge cases, and complexity analysis
Send the statement and I’ll write the full editorial end-to-end.