import math
N = int(input())
b = int(input())
A = list(map(float,input().split()))
a1 = 0
for i in range(N):
    a1 += A[i]*pow(b,A[i]-1)
print(a1)
a2 = 0
for i in range(N):
    if A[i]!=-1:
        a2 += pow(b,A[i]+1)/(A[i]+1)
    else:
        a2 += math.log(b)
print(a2)