import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Scanner;
import java.util.Set;

public class Main {
	
	public static final double EPS= 1e-7;
	
	public static double differentiate(final double x, double[] bs){
		double ret = 0;
		for(final double b : bs){
			ret += b * Math.pow(x, b - 1);
		}
		return ret;
	}
	
	public static double integrate(final double x, double[] bs){
		double ret = 0;
		for(final double b : bs){
			if(Math.abs(b + 1) < EPS){
				ret += Math.log(x);
			}else{
				ret += Math.pow(x, b + 1) / (b + 1);
			}
		}
		return ret;
	}

	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		final int N = sc.nextInt();
		final int B = sc.nextInt();
		
		double[] bs = new double[N];
		for(int i = 0; i < N; i++){
			bs[i] = sc.nextDouble();
		}
		
		System.out.printf("%.8f\n", differentiate(B, bs));
		System.out.printf("%.8f\n", integrate(B, bs));
		
	}

}