import math
N=int(input())
B=int(input())
a=[float(i) for i in input().split()]
pa=[0.0]*N
d=0.0
for i in range(N):
 #   print(i)
    dn=1.0
    pa[i]=a[i]
  #  print(pa)
    if a[i]>0.0:
        j=a[i]-1
        while j>0:
            dn*=B
            j-=1
        #    print(dn)
    else:
        j=-1*a[i]+1
        while j>0:
            dn*=B
            j-=1
        dn=1/dn
    dn*=pa[i]
    d+=dn
print(d)
d=0.0
for i in range(N):
    dn=1.0
    if pa[i]==-1 or pa[i]==0:
        pa[i]=1
    else:
        pa[i]+=1
        pa[i]=1/pa[i]
    if a[i]>0:
        j=a[i]+1
        while j>0:
            dn*=B
            j-=1
    elif a[i]==0.0:
        dn=B
    elif a[i]==-1:
        dn=math.log(B)
    else:
        j=-1*a[i]-1
        while j>0:
            dn*=B
            j-=1
        dn=1/dn
    dn*=pa[i]
    d+=dn
print(d)