import math

n = int(input())
B = int(input())
A = list(map(float, input().split()))

x1 = x2 = 0
for a in A:
    x1 += a * B ** (a-1)
    if a != -1:
        x2 += 1 /(a+1) * (B ** (a+1))
    else:
        x2 += math.log(B)

print(x1)
print(x2)