package no347;

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int b = sc.nextInt();
		double derivative = 0;
		double integral = 0;
		for(int i=0;i<n;i++) {
			double a = sc.nextDouble();
			derivative += a * Math.pow(b, a - 1);
			if (a == -1) {
				integral += Math.log(b);
			}else{
				integral += Math.pow(b, a + 1) / (a + 1);
			}
		}
		pd(derivative);
		pd(integral);
	}
	
	public static void pd(double d) {
		System.out.printf("%.5f\n",d);
	}

}