using System;

using System.Collections.Generic;

public class Program

{

    const int MAX_NUMBER = 1000;

    const int TESTS_COUNT = 10;

    const int LIST_SIZE = 300;

    static int seed = 1;

    public static void Main()

    {

        for (var i = 0; i < TESTS_COUNT; i++)

        {

            var rng = seed > 0 ? new Random(seed) : new Random();

            var numbers = new List<int>(LIST_SIZE);

            for (var j = 0; j < LIST_SIZE; j++)

            {

                numbers.Add(rng.Next(MAX_NUMBER));

            }

            Console.WriteLine($"{i+1,3}: {string.Join(", ", numbers)}");

        }

    }

}