- Time limit: 1.00 s
- Memory limit: 512 MB
There are n children, and each of them independently gets a random integer number of candies between 1 and k.
What is the expected maximum number of candies a child gets?
The only input line contains two integers n and k.
Print the expected number rounded to six decimal places (rounding half to even).
- 1 \le n \le 100
- 1 \le k \le 100