import java.util.Scanner;


public class Main_yukicoder347 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int b = sc.nextInt();
        double[] a = new double[n];
        double x1 = 0;
        double x2 = 0;
        for (int i = 0; i < n; i++) {
        	a[i] = sc.nextDouble();

        	x1 += a[i] * Math.pow(b, a[i] - 1);
        	if (a[i] == -1) {
        		x2 += Math.log(b);
        	} else {
        		x2 += Math.pow(b, a[i] + 1) / (a[i] + 1);
        	}
        }

        System.out.printf("%.5f\n", x1);
        System.out.printf("%.5f\n", x2);

        sc.close();
    }
}