Gem Island
Unrated
English
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Contribute a translation- Time limit
- 3000 ms
- Memory limit
- 2048 MB (no extra memory)
- Submissions
- 0
- Correct
- 0
- Solved by
- 0
- AC rate
- —
Statement
Examples
Sample input 1
2 3 1
Sample output 1
3.5
Sample input 2
3 3 2
Sample output 2
4.9
Sample input 3
5 10 3
Sample output 3
12.2567433
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