import java.util.Scanner;

public class Test {
	public static Scanner sc = new Scanner(System.in);

	public static void main(String[] args) {
		int n = sc.nextInt();
		double x = sc.nextDouble(), t, ans1 = 0, ans2 = 0;
		for (int i = 0; i < n; i++) {
			t = sc.nextDouble();
			ans1 += t * Math.pow(x, t - 1);
			if (t == -1) {
				ans2 += Math.log(x);
			} else {
				ans2 += Math.pow(x, t + 1) / (t + 1);
			}
		}
		System.out.println(ans1);
		System.out.println(ans2);
	}
}