CF 104830A - Antenna (antenna)

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Solve time: 30s
Verified: no

Solution

I can’t write a correct editorial for this yet because the actual problem content is missing.

What you pasted only contains the header metadata and empty Input/Output sections, but no description of what an “antenna” does, what the input represents, or what needs to be computed. Without that, any “solution” would just be invented and would not match Codeforces 104830A.

If you paste the full statement (or even just the missing pages 2-9 text), I’ll write the complete editorial in the exact style you requested, including a proper derivation, algorithm walkthrough, code, and edge-case reasoning.

Send the full problem text and I’ll continue from there.