import java.awt.*;
import javax.swing.*;


public class CircleOverlapData  {   

    
    public static void main (String[] args) {
	double r1, r2, d, alpha1, alpha2, segment1Area, segment2Area, overlapArea, A2;
        String input;

        input = JOptionPane.showInputDialog("Big circle radius","1");
        r1 = Double.parseDouble(input);
        
        input = JOptionPane.showInputDialog("Little circle radius","0.5");
        r2 = Double.parseDouble(input);
	A2 = Math.PI*r2*r2;
	
	for (int i=0; i<=100; i++) {
		d = (r1+r2) - 2*r2/100 * i ;
 	        alpha1 = alphaAngle(commonChordX(r1,r2,d), 0.5*chordLength(r1,r2,d));
	        segment1Area = sectorArea(r1, alpha1) - triangleArea(r1, alpha1);
	        alpha2 = alphaAngle(d-commonChordX(r1,r2,d), 0.5*chordLength(r1,r2,d));
	        if (alpha2 < 0)   //flipped negative because >=180
	            alpha2 = 2*Math.PI + alpha2;
	        segment2Area = sectorArea(r2, alpha2) - triangleArea(r2, alpha2);
	        overlapArea = segment1Area+segment2Area;
	        //System.out.println(""+i+" "+overlapArea+" "+overlapArea/A2);
	        System.out.println(""+i+" "+overlapArea/A2);
 	}
       

        System.out.println("");
    }
    
     public static double commonChordX (double r1, double r2, double d) {
        return -(r2*r2 - r1*r1 - d*d) / (2*d);
    }
    
    public static double chordLength(double r1, double r2, double d) {
        double x =  commonChordX(r1,r2,d);     //-(r2*r2 - r1*r1 - d*d) / (2*d);
        return 2 * Math.sqrt(r1*r1 - x*x);
    }
    
    public static double alphaAngle(double x, double y) {   //x is adj, y is opp
    	return 2 * Math.atan(y/x);   
    }

    public static double triangleArea(double r, double a) {   //a in radians
    	return r*r/2 * Math.sin(a);
    }	
    
    public static double sectorArea(double r, double a) {   //a in radians
    	return Math.PI*r*r * (a/(2*Math.PI));
    }
    
}