using System;

public class Program

{

    public static void Main()

    {

        rand(1, 17);

    }

    public static void rand(int min, int max)

    {

        bool isopen = true;

        int o = 0;

     while(isopen)

     {    Random a = new Random();

      o++;

      if(o == 1)

      {

         max = 17; 

      }

      if(o == 2)

      {

          max = 2;

      }

      else if(o == 3)

      {

         max=21; 

      }

         Console.WriteLine(o + " число: " + a.Next(min, max));

         Console.WriteLine("продолжить?:");

         String str = Console.ReadLine();

         if(o == 3)

         {

             o = 0;

         }

         if(str == "нет".ToLower())

        {

            isopen = false;

        }

        else 

        {

            isopen = true;

        }

      Console.Clear();

     }

    }

}