#coding: utf-8
##yuki_347
import math

N=int(raw_input())
B=int(raw_input())
a=map(float,raw_input().split())

D=0.0
for i in xrange(N):
 D+=1.0*a[i]*B**(a[i]-1)

print D

I=0.0
for i in xrange(N):
 if a[i]==-1.0:
  I+=abs(math.log(B))
 else:
  I+=1.0*B**(a[i]+1)/(a[i]+1)

print I