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


def bibun(p,r):
    return p*(r**(p-1))

def sekibun(p,r):
    if p == -1:
        return math.log(r)
    else:
        return (r**(p+1))/(p+1)

ans1 = 0
ans2 = 0
for q in a:
    ans1 += bibun(q,B)
    ans2 += sekibun(q,B)

print(ans1)
print(ans2)