using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace ConsoleApplication1
{

    class Point
    {
        private int x;
        private int y;

        public Point()
        {
            x = 0;
            y = 0;
        }

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

        public void Show()
        {
            Console.WriteLine("Point: ({0}, {1})", x, y);
        }

        public double Distance()
        {
            return Math.Sqrt(x * x + y * y);
        }

        public void Move(int a, int b)
        {
            x += a;
            y += b;
        }

        public int X
        {
            get {
                return x;
            }

            set {
                x = value;
            }
        }

        public int Y
        {
            get
            {
                return y;
            }

            set
            {
                y = value;
            }
        }

        public int ScalarMult
        {
            set
            {
                x *= value;
                y *= value;
            }
        }

        public int this[int i] {
            get
            {
                if (i == 0)
                    return x;
                else
                {
                    if (i == 1)
                        return y;
                    else
                    {
                        Console.WriteLine("Недопустимый индекс");
                        return 0;
                    }
                }
            }

            set
            {
                if (i == 0)
                    x = value;
                else
                {
                    if (i == 1)
                        y = value;
                    else
                    {
                        Console.WriteLine("Недопустимый индекс");
                    }
                }
            }
        }


        public static Point operator++(Point a) {
            Point temp = new Point();
            temp[0] = a[0] + 1;
            temp[1] = a[1] + 1;
            return temp;
        }

        public static Point operator --(Point a)
        {
            Point temp = new Point();
            temp[0] = a[0] - 1;
            temp[1] = a[1] - 1;
            return temp;
        }

        public static bool operator true(Point a)
        {
            if (a[0] == a[1])
                return true;
            else
                return false;
        }

        public static bool operator false(Point a)
        {
            if (a[0] != a[1])
                return true;
            else
                return false;
        }

        public static Point operator+(Point a, int b)
        {
            a[0] += b;
            a[1] += b;
            return a;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            Point point1 = new Point();
            Point point2 = new Point(3, 2);

            point1.Show();
            Console.WriteLine("Point 2 distance: {0}", point2.Distance());

            point1.Move(5, 5);
            point1.Show();

            point2.X = 10;
            point2.Y = 4;

            point1.ScalarMult = 3;
            point1.Show();
            point2.Show();

            Console.WriteLine("Point 1 first coordinate: {0}", point1[0]);
            Console.WriteLine("Point 2 second coordinate: {0}", point2[1]);

            point1++;
            point1.Show();

            point2--;
            point2.Show();

            if (point1)
            {
                Console.WriteLine("First and second coordinate are equals");
            }

            point2 = point2 + 5;
            point2.Show();
        }
    }
}