カードキー (Keycards)
Unrated
日本語
Language
Contribute a translation- Time limit
- 1000 ms
- Memory limit
- 64 MB
- Submissions
- 0
- Correct
- 0
- Solved by
- 0
- AC rate
- —
Statement
Examples
Sample input 1
3 3
Sample output 1
1
Sample input 2
3 2
Sample output 2
6
Sample input 3
3 1
Sample output 3
30
Sample input 4
3 0
Sample output 4
218
Notes
JOI 2010/2011 カードキー · JCIOI · CC BY-SA 4.0
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