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

    namespace ConsoleApplication1
    {
    class Tacka
    {
        private double _x;
        private double _y;

        public void SetX(double x)
        {
           this._x = x;
        }
        public double GetX()
        {
            return this._x;
        }
        //property za pristup polju _y
        public double Y
        {
            get { return _y; }
            set { this._y = value; }
        }
            public Tacka () {}
            public Tacka(double x,double y)
        {
            this.SetX(x);//poziv metode za setovanje vrednosti
            this.Y = y;//poziv propertija
        }
            public string Prikazi()
            {
                string pom = string.Format("{0},{1}", this.GetX(),this.Y);
                return pom;
            }
            public Tacka Centar
            {
                get { return _centar; }
                set
                {
                    this._centar = value;
                }
            }




    }
    class Program
    {
        static void Main(string[] args)
        {
            double x,y;
            x = Convert.ToDouble(Console.ReadLine());
            y = Convert.ToDouble(Console.ReadLine());
            Tacka t = new Tacka(x, y);

        }
    }
    }