# -*- coding: utf-8 -*-

import math

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

derivation = 0.0
integral = 0.0

for e in a:
    derivation += e * B**(e-1.0)
    integral += 1/(e+1.0) * (B**(e+1.0)) if e+1.0!=0 else math.log(B)

print(derivation)
print(integral)