using System;

public class Program

{

    public static void Main()

    {

        var r = new Random();

​

        for (var i = 0; i < 10; i++) {

            var n = r.Next(100);

            Console.WriteLine($"{i}: {n}");

        }

        Console.WriteLine("----");

        for (var i = 0; i < 10; i++) {

            var n = new Random().Next(100);

            Console.WriteLine($"{i}: {n}");

        }

​

    }

}