n = gets.to_i
b = gets.to_i
ans1 = ans2 = 0
gets.split.map(&:to_f).each{|a|
    ans1 += a * (b ** (a - 1))
    if a == -1.0
        ans2 += Math.log(b)
    else
        ans2 += (b ** (a + 1)) / (a + 1)
    end
    }
p ans1
p ans2