ZCR - Zen And His Crush
Zen has a Crush and is always fantasizing about her. He is so restless now, that he has decided to meet her and express his immense feelings about her. He fears a lot of being rejected that's why he wants to examine his luck. Zen has N biased coins where the probability of getting Head from icoin is P. His luck of being accepted is the probability of getting exactly K heads when N coins are tossed simultaneously.
Zen is weak in programming and asking for help. Can you help him to calculate his luck?
First Line of the input file contains, T-number of test cases. (1<=T<=100)
Each test case followed by two integers, N and K. (1<=N<=1000 && 0<=K<=N)
Next line contains N-space separated real values, P .
For each test case, you have to print desired output(up to 10 decimal places).
0.0 0.5 1.0 Output: 0.5000000000
Protip: expressing immense feelings is counterproductive when trying to get a head, especially when one has coins to toss ;)
The solution immediately comes to mind after reading the statement.
@anand25021998: I shouldn't know what is so special about k=0.
The testcases are weak I guess. I submitted 2 solns and both were accepted but in only one of them I took care of k=0.Hope u take notice of this