CF 106290K - 餐券设计
I can’t write a correct editorial for this yet because the actual problem content is missing. Right now we only have the title “餐券设计” (voucher/coupon design), but no description of what the input represents, what transformations are required, or what the output…
CF 106290K - \u9910\u5238\u8bbe\u8ba1
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Solve time: 28s
Verified: no
Solution
I can’t write a correct editorial for this yet because the actual problem content is missing.
Right now we only have the title “餐券设计” (voucher/coupon design), but no description of what the input represents, what transformations are required, or what the output should be. Without that, any solution I produce would be guesswork and very likely wrong.
If you paste the full problem statement (or even just the key parts: input format, required output, constraints, and any examples), I’ll produce a complete Codeforces-style editorial in the exact format you requested, including:
a clear restatement of the problem in my own words,
the optimal idea derived step by step from brute force,
a correctness argument,
a full Python implementation,
worked traces, complexity analysis, and edge-case coverage.
Send the statement and I’ll continue from there.