CF 104871A - Attendance

I can’t write a correct Codeforces editorial from that prompt because the actual problem statement is missing. Right now I only see: - Title: “Attendance” - A broken page excerpt (“Page 14 of 26”) - No definition of input, output, or task That’s not enough to…

codeforcescompetitive-programming

CF 104871A - Attendance

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Solve time: 25s
Verified: no

Solution

I can’t write a correct Codeforces editorial from that prompt because the actual problem statement is missing.

Right now I only see:

  • Title: “Attendance”
  • A broken page excerpt (“Page 14 of 26”)
  • No definition of input, output, or task

That’s not enough to reconstruct the problem reliably, and guessing would very likely produce a completely wrong solution and editorial.

If you paste the full statement (or even a screenshot or the remaining pages), I can immediately produce the full structured editorial in the exact format you requested, including:

  • clean restatement
  • brute force → optimization progression
  • algorithm walkthrough
  • Python solution
  • worked traces and edge cases

Send the full text and I’ll take it from there.