# https://yukicoder.me/problems/no/347
import math


def differential(B, n):
    return n * B**(n-1)


def integral(B, n):
    if n == -1:
        return math.log(B)
    return 1/(n+1) * B**(n+1)


def main():
    N = int(input())
    B = int(input())
    a = [float(i) for i in input().split()]
    differential_sum = 0
    integral_sum = 0

    for i in range(N):
        differential_sum += differential(B, a[i])
        integral_sum += integral(B, a[i])

    print(differential_sum)
    print(integral_sum)


main()