package main

import (
	"bufio"
	"fmt"
	"math"
	"os"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)
var rdr = bufio.NewReaderSize(os.Stdin, 1000000)

func main() {
	sc.Split(bufio.ScanWords)
	n, b := nextInt(), nextFloat()
	es := make([]float64, n)
	for i := range es {
		es[i] = nextFloat()
	}

	d, i := 0.0, 0.0
	for _, v := range es {
		d += v * math.Pow(b, v-1)
		if v == -1 {
			i += math.Log(b)
			continue
		}
		i += 1 / (v + 1) * math.Pow(b, v+1)
	}
	fmt.Printf("%f\n%f", d, i)
}

func nextLine() string {
	sc.Scan()
	return sc.Text()
}

func nextInt() int {
	i, _ := strconv.Atoi(nextLine())
	return i
}

func nextFloat() float64 {
	f, _ := strconv.ParseFloat(nextLine(), 64)
	return f
}