import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;

class Main {
	static PrintWriter out = new PrintWriter(System.out);
	static String str;

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int len = Integer.parseInt(br.readLine());
		int B = Integer.parseInt(br.readLine());
		String[] str=br.readLine().split(" ");
		double[] num=new double[len];
		for(int i=0;i<len;i++){
			num[i]=Double.parseDouble(str[i]);
		}
		double sum=0;
		for(int i=0;i<len;i++){
			sum+=num[i]*Math.pow(B, num[i]-1);
		}
		System.out.println(sum);

		sum=0;
		for(int i=0;i<len;i++){
			if(num[i]==-1.0){
				sum+=Math.log(B);
			}else{
				sum+=Math.pow(B, num[i]+1)/(num[i]+1);
			}
		}
		System.out.println(sum);


	}
}