CF 104148D - Кубическая непрерывность

I’m missing the actual problem statement, so I can’t safely reconstruct the intended solution or write a correct editorial for it.

CF 104148D - \u041a\u0443\u0431\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u043d\u0435\u043f\u0440\u0435\u0440\u044b\u0432\u043d\u043e\u0441\u0442\u044c

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Solve time: 27s
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Solution

I’m missing the actual problem statement, so I can’t safely reconstruct the intended solution or write a correct editorial for it.

“Codeforces 104148D - Кубическая непрерывность” is not a standard publicly memorized problem, and without the description (what is given, what must be computed, constraints, and any definitions), any attempt to write an editorial would risk inventing the task.

If you paste the full statement (or even just the key parts: input format, what “cubic continuity” refers to, and constraints), I can immediately produce a complete, properly structured editorial in the format you requested.