cf/mirror

Eyes Closed

CF
895E2300· international master2.5s256 MB⌨ stdin/stdout
#data structures#probabilities

Examples

Sample 1of 3
Input
4 4
1 1 2 2
1 2 2 3 3
2 1 2
1 1 2 3 4
2 1 2
Output
3.0000000
3.0000000
Sample 2of 3
Input
10 5
1 1 1 1 1 2 2 2 2 2
1 1 5 6 10
2 1 5
1 1 5 6 10
1 1 5 6 10
2 6 10
Output
6.0000000
8.0400000
Sample 3of 3
Input
10 10
1 2 3 4 5 6 7 8 9 10
1 1 5 6 10
1 1 5 6 10
2 1 5
1 1 3 6 9
2 1 3
1 5 7 8 10
1 1 1 10 10
2 1 5
2 7 10
2 1 10
Output
23.0000000
14.0000000
28.0133333
21.5733333
55.0000000
895E.cpp
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Ln 11·137 BGNU C++20 (64)