from math import log

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

S=0.0
for a in A:
    S+=a*B**(a-1)

print(S)

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

print(T)