import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

from math import log

N = int(readline())
B = int(readline())
*A, = map(float,read().split())

D = 0
I = 0
for a in A:
    D += a * (B ** (a-1))
    if a != -1:
        I += B**(a+1) / (a+1)
    else:
        I += log(B)

print(D,I,sep='\n')