struct Point
    {
        public int X { get; set; }
        public int Y { get; set; }

        public Point(int x, int y)
        {
            this = new Point();
            X = x;
            Y = y;
        }

        public Point(Point q)
        {
            this = new Point();
            X = q.X;
            Y = q.Y;
        }

        public static Point operator +(Point x, Point y)
        {
            return new Point(x.X + y.X, x.Y + y.Y);
        }

        public static Point operator -(Point x, Point y)
        {
            return new Point(x.X - y.X, x.Y - y.Y);
        }

        public static bool operator ==(Point x, Point y)
        {
            return ((x.X == y.X) && (x.Y == y.Y));
        }

        public static bool operator !=(Point x, Point y)
        {
            return !(x == y);
        }
    }