import java.util.Arrays;

class Driver {
	public static void main(String[] args) {

		Circle c1 = new Circle(1);
		Circle c2 = new Circle(1);
		Circle c3 = new Circle(2);
		Circle c4 = new Circle(3);

		Circle[] array = {c3,c2,c4,c1};

		for(Circle c : array) {
			System.out.println(c.toString());	
		}
		
		Arrays.sort(array);

		for(Circle c : array) {
			System.out.println(c.toString());	
		}

	}
}