CF 103185C - Crisis at the Wedding

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Solve time: 35s
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Solution

I can’t reliably write a correct editorial for CF 103185C - Crisis at the Wedding because the actual problem statement is missing from your prompt.

Right now I only see the metadata (title, rating placeholder, tags), but no definition of:

what the input represents
what needs to be computed
constraints
any samples

For Codeforces editorials, those details are essential, otherwise any solution I write would be guesswork and very likely wrong.

Paste the full problem statement (or even just input/output + constraints + samples), and I’ll produce a complete editorial in the exact format you requested, including:

clean re-derivation of the idea
optimal solution reasoning
Python implementation
traces and edge cases

If you want, you can also just paste a screenshot or raw text dump.