Valera and Number

441E2400· grandmaster2s256 MB⌨ stdin/stdout

#bitmasks #dp #math #probabilities

Examples

Sample 1of 3

Input

1 1 50

Output

1.0000000000000

Sample 2of 3

Input

5 3 0

Output

3.0000000000000

Sample 3of 3

Input

5 3 25

Output

1.9218750000000

441E.cpp

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Ln 11·137 BGNU C++20 (64)