博覧会
UnratedLanguage limit
日本語
Language
Contribute a translation- Time limit
- 1000 ms
- Memory limit
- 64 MB (no extra memory)
- Submissions
- 0
- Correct
- 0
- Solved by
- 0
- AC rate
- —
Statement
Examples
Sample input 1
5 0 0 1 0 -1 -2 0 1 -1 1
Sample output 1
3
Notes
原典：JOI 2009/2010 本選、情報オリンピック日本委員会。CC BY-SA 4.0。
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Source
This problem accepts only these languages.
C++20