using System;

class Point
{
    private double x;
    private double y;

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

    public Point ()
    {}

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

    public double Dlina(Point p)
    {
        double Dl = Math.Sqrt((this.x - p.x) * (this.x - p.x) + (this.y - p.y) * (this.y - p.y));
        return Dl;
    }

    public override string ToString()
    {
        string ss = x + " ; " + y;
        return ss;
    }
}