from math import log
N = int(input())
B = int(input())
A = list(map(float,input().split()))

f1b = sum(i*B**(i-1) for i in A)
Fb = 0
for i in A:
    if not i == -1:
        Fb += (B**(i+1)) / (i+1)
    elif i == -1:
        Fb += log(B)
print(f1b)
print(Fb)