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

ans1 = 0
ans2 = 0
from math import log
for i in a:
    ans1 += i * pow(B,i-1)
    if i != -1:
        ans2 += pow(B,i+1) / (i+1)
    else:
        ans2 += log(B)
print(ans1)
print(ans2)