public class Main {

    public static float R;

    public static float getFloat() throws Exception
    {
        byte[] buf = new byte[12];
        System.in.read(buf);
        return new Float(new String(buf, 0, 12));
    }

    public static boolean check(myPoint p) throws Exception
    {
        if (p.x<=0 && p.x>=-R) //in the left part
        {
            if (p.y>=0 && Math.sqrt(p.x*p.x+p.y*p.y)<=R || p.y<0 && p.y>=-p.x-R) //in circle part
                return true;
        } else if (p.x>0 && p.x<=R) //in the right part
        {
            if (p.y>=0 && p.y<=R/2)
                return true;
        }
        return false; //nowhere
    }

    public static void main(String[] args) {
        try {
            myPoint[] A = {new myPoint(4,4), new myPoint(3, -3), new myPoint(-3, 5), new myPoint(-4, 3), new myPoint(-2, -1)};
            System.out.print("Enter R: ");
            R = getFloat();
            for (myPoint p : A)
                if (check(p)) System.out.println(p);
        } catch (Exception e) {
            System.err.println(e.toString());
        }
    }
}

class myPoint extends Object
{
    float x;
    float y;
    public myPoint(float x, float y)
    {
        this.x = x;
        this.y = y;
    }
    public String toString()
    {
        return "X: "+this.x+" Y: "+this.y;
    }
}