from math import log

N=int(input())
B=int(input())
A=list(map(float,input().split()))

ANS=0
ANS2=0
for a in A:
    ANS+=a*(B**(a-1))
    if a!=-1:
        ANS2+=1/(a+1)*(B**(a+1))
    else:
        ANS2+=log(B)

print(ANS)
print(ANS2)