import math

n = int(input())
b = int(input())
a = list(map(float, input().split()))

f = 0
F = 0
for i in a:
    f += i * b**(i-1)
    if i != -1.0:
        F += 1/(i+1) * b**(i+1)
    else:
        F += math.log(b)

print(f)
print(F)