class Point {
    private int x;
    private int y;
    
    public Point(int x, int y) {
        this.x = x;
        this.y = y;
    }
}

class Circle {
    private Point center;
    private int radius;
    
    public Circle(Point center, int radius) {
        this.center = center;
        this.radius = radius;
    }
    
    public int getRadius() {
        return radius;
    }
    
    public double getSquare() throws NegativeRadiusException {
        if (radius < 0) {
            throw new NegativeRadiusException("Radius cannot be negative");
        }
        return Math.PI * radius * radius;
    }
}

class NegativeRadiusException extends Exception {
    public NegativeRadiusException(String message) {
        super(message);
    }
}

class App {
    public static void printSquare(Circle circle) {
        try {
            int square = (int) Math.round(circle.getSquare());
            System.out.println("Square of the circle: " + square);
        } catch (NegativeRadiusException e) {
            System.out.println("Failed to calculate square: " + e.getMessage());
        } finally {
            System.out.println("Calculation finished");
        }
    }
}

public class Main {
    public static void main(String[] args) {
        Point center = new Point(0, 0);
        Circle circle = new Circle(center, 5);
        App.printSquare(circle);
        
        Circle circle2 = new Circle(center, -2);
        App.printSquare(circle2);
    }
}