from math import log
N = int(input())
B = int(input())
A = list(map(float, input().split()))
fd = 0
for i in range(N):
    fd += A[i] * B ** (A[i] - 1)
F = 0
for i in range(N):
    if A[i] == -1.0:
        F += log(B)
    else:
        F += B ** (A[i] + 1) / (A[i] + 1)
print(fd, F, sep = "\n")