using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        Random rand = new Random();

        int[] numbers = new int[20];

        bool[] hasRun = new bool[2] { false, false};

        for (int i = 0; i < numbers.Length; ++i)

        {

            int r = rand.Next(200);

            //1

            if (hasRun[0] == false)

                if (r < 20)

            {

                Console.WriteLine(numbers[i]);

                hasRun[0] = true;

            }

            //2 

            if (r == 101)

                break;

            //3

            if (hasRun[1] == false)

            {

                hasRun[1] = true;

                if (r >= 170)

                    numbers.FirstOrDefault(x => x <= 20);

            }//think this is done idk

            //4

            if (r == 99)

            {

                hasRun[rand.Next(2)] =  true;

                i--;

            }

            //Do not edit

            numbers[i] = r;

        }

        //Do not edit

        string s = "";

        for (int i = 0; i < numbers.Length; ++i)

            s += numbers[i] + " ";

        Console.WriteLine(s);

    }

}