#!/usr/bin/python3
# -*- coding: utf-8 -*-
# †
from math import log

eps = 1e-9
dnya = lambda arr: sum(a * b**(a-1) for a in arr)
inya = lambda arr: sum(log(b) if abs(a+1)<eps else b**(a+1)/(a+1) for a in arr)

n = int(input())
b = int(input())
a = list(map(float, input().split()))
res1, res2 = dnya(a), inya(a)
print(res1)
print(res2)