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

import sys
import math

N = float(raw_input())
B = float(raw_input())
A = map(float, raw_input().split())

x1 = 0
x2 = 0

for ai in A:
    x1 += ai*B**(ai-1)

for ai in A:
    if ai == -1.:
        x2 += math.log(B)
    else:
        x2 += B**(ai+1)/(ai+1)

print x1
print x2