import math
N=int(input())
B=float(input())
A=list(map(float,input().split()))
res=0.0
for i in range(N):
    res+=pow(B,A[i]-1)*A[i]
print(res)
res=0.0
for i in range(N):
    if abs(A[i]+1)<0.01:
        res+=math.log(B)
    else:
        res+=pow(B,A[i]+1)/(A[i]+1)
print(res)