n, b = io.read("*n", "*n")
dif, int = 0, 0
for i = 1, n do
    a = io.read("*n")
    dif = dif + a * math.pow(b, a - 1)
    if(string.format("%.1f", a) == "-1.0") then
        int = int + math.log(math.abs(b))
    else
        int = int + math.pow(b, a + 1) / (a + 1)
    end
end
io.write(string.format("%.8f\n%.8f\n", dif, int))