import math

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

def solve(N, B, As):
    x1 = 0
    x2 = 0
    for a in As:
        x1 += a * B ** (a-1)
        if a != -1:
            x2 += (B ** (a + 1))/(a + 1)
        else:
            x2 += math.log(B)
    return x1, x2

x1, x2 = solve(N, B, As)
print(x1)
print(x2)