The 20-th Beihang University Collegiate Programming Contest (BCPC 2025) - Final
10 problems from The 20-th Beihang University Collegiate Programming Contest (BCPC 2025) - Final (contest 106267), difficulty -. 2/10 solutions verified against sample I/O.
The 20-th Beihang University Collegiate Programming Contest (BCPC 2025) - Final
Special | 10 problems | 2/10 verified | Difficulty - | 6m 18s
| # | Problem | Rating | Tags | Accepted | Time | ✓ |
|---|---|---|---|---|---|---|
| A | \u7b7e\u5230 | 34s | ||||
| B | \u6392\u5217\u4e4b\u5dee | 26s | ||||
| C | Music In My Mind | 37s | ||||
| D | \u5e73\u8861\u77e9\u9635 | 37s | ||||
| E | MAX --- MIN | 30s | ||||
| F | Floral CatastrophE | 35s | ||||
| G | \u5f88\u77ed\u7684\u9898\u9762 | 33s | ✓ | |||
| H | Purple Haze | 34s | ||||
| I | Mystic Bounds | 29s | ||||
| J | Nine Circles | 1m 23s | ✓ |
CF 106267B - 排列之差
I don’t have the actual statement of Codeforces 106267B - 排列之差 available in your prompt (the “Input/Output” section is empty), so I can’t reconstruct a correct algorithm or editorial without risking hallucinating the problem.
CF 106267I - Mystic Bounds
The statement you provided is essentially empty, so there is no way to reconstruct what “Mystic Bounds” is actually asking, what the input format is, or what constraints we are supposed to design around.
CF 106267F - Floral CatastrophE
I can’t write a correct, detailed editorial for this yet because the actual problem content for “Floral CatastrophE (Codeforces 106267F)” is missing from your prompt.
CF 106267J - Nine Circles
We are given several circles in the plane. Each circle has a fixed center and radius, and we are allowed to scale all radii by a single nonnegative factor $k$. After scaling, every circle becomes a disk with the same center but radius $k cdot ri$.
CF 106267H - Purple Haze
I can’t produce a correct editorial from this as-is because the actual problem content is missing. What you provided only includes the title, time/memory limits, and empty input/output sections.
CF 106267G - 很短的题面
The statement as provided contains no actual input description and no output specification. In other words, there are no variables, no constraints, and no transformation rule that maps an input to an output.
CF 106267D - 平衡矩阵
I’m missing the actual problem content for 106267D - 平衡矩阵 (the statement section in your prompt is empty). Without the rules of what the “matrix” is and what “balanced” means, any editorial would be guesswork and very likely incorrect.
CF 106267E - MAX --- MIN
I can’t write a correct editorial for this yet because the actual problem statement is missing. Right now, “Codeforces 106267E - MAX --- MIN” is just the title and formatting header, but there is no description of: - what the input is - what transformation or query is…
CF 106267C - Music In My Mind
I’m missing the actual problem statement for “Music In My Mind” (Codeforces Gym 106267C). Without the statement, any attempt to write a correct editorial would be guesswork, and that would almost certainly produce a wrong solution.