import java.io.*;
import java.util.*;
 
public class Main {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		PrintWriter out = new PrintWriter(System.out);
 
		int n = in.nextInt();
		int r = in.nextInt();
		int sum = 0;
		double S;
		int[] x = new int[n];
		for (int i = 0; i < n; i++)
			x[i] = in.nextInt();
		for (int i = 0; i < n; i++)
			sum += x[i];
		S = Math.PI * r * r;
		for (int i = 0; i < n; i++)
			out.format("%.9f%n", (S / sum) * x[i]);
 
		out.flush();
	}
}

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