CF 102551B - Скоростной транспорт

I can write the editorial, but the problem statement for Codeforces 102551B “Скоростной транспорт” is missing from the prompt, and I do not have enough reliable information to reconstruct the exact task, constraints, examples, and intended algorithm.

codeforcescompetitive-programming

CF 102551B - \u0421\u043a\u043e\u0440\u043e\u0441\u0442\u043d\u043e\u0439 \u0442\u0440\u0430\u043d\u0441\u043f\u043e\u0440\u0442

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Solve time: 43s
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Solution

I can write the editorial, but the problem statement for Codeforces 102551B “Скоростной транспорт” is missing from the prompt, and I do not have enough reliable information to reconstruct the exact task, constraints, examples, and intended algorithm.

Please provide the full problem statement (including input/output format and constraints), or paste a link to the problem page. Once I have that, I’ll produce the complete editorial in the requested structure and style.