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CF
23E2500· grandmaster2s256 MB⌨ stdin/stdout
#dp

Examples

Sample 1of 3
Input
5
1 2
2 3
3 4
4 5
Output
6
Sample 2of 3
Input
8
1 2
1 3
2 4
2 5
3 6
3 7
6 8
Output
18
Sample 3of 3
Input
3
1 2
1 3
Output
3
23E.cpp
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Ln 11·137 BGNU C++20 (64)