using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace IO_lab03_zad04
{
    class Program
    {
        delegate int DelegateType(object arguments);
        static DelegateType delegateName;
        static int Fibonacci(object n)
        {
            int a = 0;
            int b = 1;
            int x = Convert.ToInt32(n);
            // In N steps compute Fibonacci sequence iteratively.
            for (int i = 0; i < x; i++)
            {
                int temp = a;
                a = b;
                b = temp + b;
            }
            return a;
        }


        static void Main(string[] args)
        {
            delegateName = new DelegateType(Fibonacci);
            IAsyncResult ar = delegateName.BeginInvoke(22, null, null);
            Console.Write(delegateName.EndInvoke(ar));
        
        }
    }
}