Two Round Dances
1433E1300· pupil1s256 MB⌨ stdin/stdout
Examples
Sample 1of 4
Input
2
Output
1
Sample 2of 4
Input
4
Output
3
Sample 3of 4
Input
8
Output
1260
Sample 4of 4
Input
20
Output
12164510040883200
58%
1433E.cpp
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Ln 11·137 BGNU C++20 (64)