CF 102894B - Santa Claus Is Coming To Town

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Solve time: 29s
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Solution

I don’t have the actual problem statement for “Codeforces 102894B - Santa Claus Is Coming To Town” in the prompt, and it looks like it’s missing after the header.

To write a proper editorial in the style you requested, I need at least the full statement (or a link / screenshot / copied text), because the solution, reasoning, and edge cases are entirely problem-specific.

If you paste the statement here, I’ll produce a full Codeforces-style editorial with:

a clean restatement in my own words,
brute force vs optimal derivation,
a step-by-step algorithm walkthrough,
Python solution,
worked traces,
and edge case analysis.