from math import log

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

ans1 = 0.0
ans2 = 0.0
for i in range(n):
    ans1 += A[i] * (b**(A[i] - 1))
    if A[i] == -1.0:
        ans2 += log(b)
    else:
        ans2 += b**(A[i] + 1) / (A[i] + 1)
print(ans1)
print(ans2)