import math

N = int(input())
B = int(input())
l = list(map(float, input().split()))
ff = 0
F = 0

for li in l:
    ff += li * pow(B,li - 1)
    if li == -1:
        F +=  math.log(B)
    else:
        F += (1 / (li + 1)) * pow(B, li + 1)

print(ff)
print(F)