class Point {
    double x;
    double y;

    Point(double x, double y) {
        this.x = x;
        this.y = y;
    }

    double calculateDistance(Point point) {
        return Math.sqrt(Math.pow(this.x - point.x, 2) + Math.pow(this.y - point.y, 2));
    }

    void moveCloser(Point referencePoint, double ratio) {
        this.x = this.x + (referencePoint.x - this.x) * ratio;
        this.y = this.y + (referencePoint.y - this.y) * ratio;
    }
}