using System;

public class Program

{

    public static void Main()

    {

        Random random = new Random();

        var developers = new string[]{

            "Filip",

            "Jakub",

            "Karel",

            "Milan",

            "Romeo",

            "Viktor"};

        var testers = new string[]{

            "Petr",

            "Sebastian"};   

        var presenters = new string[]{

            "Jakub",

            "Evža",

            "Milan",

            "Filip"};   

        string developer  = developers[random.Next(0, developers.Length)];

        string tester  = testers[random.Next(0, testers.Length)];

        string presenter  = presenters[random.Next(0, presenters.Length)];

        Console.WriteLine($"Tester: {tester}\r\nDeveloper: {developer}\r\nPresent: {presenter}");

    }

}