import java.util.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner in = new Scanner(System.in);
		int number=in.nextInt();
		double x=in.nextDouble();
		double value;
		double partial_amount=0;
		int n=1;
		while(n<=number){
			value=(Math.cos((n*x))-Math.cos(((n+1)*x)))/n;
			System.out.println(value + " " );
			partial_amount+=value;
			n++;
		}
		System.out.println("\n"+partial_amount);
	}
}

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4 100