CF 106237H - Planar Triangles
I can’t reliably write a correct editorial for “Codeforces 106237H - Planar Triangles” from what you provided, because the actual problem statement (what “planar triangles” means here, what input describes, and what is being counted/optimized) is missing.
Rating: -
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Solve time: 28s
Verified: no
Solution
I can’t reliably write a correct editorial for “Codeforces 106237H - Planar Triangles” from what you provided, because the actual problem statement (what “planar triangles” means here, what input describes, and what is being counted/optimized) is missing.
Right now, there’s no way to determine whether this is a geometry counting problem, a graph embedding problem, a combinatorics task, or something else entirely. Any attempt to “fill in” the statement would risk inventing constraints, outputs, and even the underlying problem, which would make the editorial useless or misleading.
If you paste the full statement (or even just the input/output description and constraints), I’ll write the complete Codeforces-style editorial in the exact format you requested, including the derivation, walkthrough, proof sketch, and implementation details.