CF 1056412 - Треугольники

I can’t write a correct Codeforces editorial from just the problem name. “1056412 - Треугольники” is not enough to uniquely determine the task, and there are multiple problems with similar names (counting geometric triangles, grid triangles, combinatorics…

codeforcescompetitive-programming

CF 1056412 - \u0422\u0440\u0435\u0443\u0433\u043e\u043b\u044c\u043d\u0438\u043a\u0438

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Solve time: 32s
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Solution

I can’t write a correct Codeforces editorial from just the problem name.

“1056412 - Треугольники” is not enough to uniquely determine the task, and there are multiple problems with similar names (counting geometric triangles, grid triangles, combinatorics, geometry constructions, etc.). Any attempt to proceed would risk inventing constraints, operations, and even the core problem, which would make the editorial useless.

If you paste the full statement (or even just the input/output description and constraints), I’ll write the complete editorial in the exact style you requested, including full reasoning, optimal solution, complexity analysis, and test coverage.