using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Welcome to National Blood bank");

        Console.Write("Name = ");

        string Name = Convert.ToString(Console.ReadLine());

        Console.Write("Age = ");

        int Age = Convert.ToInt32(Console.ReadLine());

        if (Age < 18)

        {   

        Console.WriteLine("Cannot proceed, Under age");

        }

        else

        {

        Console.WriteLine("You can proceed");

         Console.Write("Blood type = ");

        string Blood_type = Convert.ToString(Console.ReadLine());

            Random rnd = new Random();

            int id =rnd.Next(1000, 9999);

            Console.WriteLine("Here is your ID");

            Console.WriteLine(id);

        }

            Console.WriteLine("Thank you for donating");

    }

}