using System;

public class Program

{

    public static void Main()

    {

        var rx = 212;

        var ry = 179;

        var lx = 291;

        var ly = 180;

        var rl = (Math.Pow(rx - lx, 2) + Math.Pow(ry - ly, 2));

        Console.WriteLine(rl);

        Console.WriteLine(Math.Sqrt(rl));

    }

}