import java.util.*;

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