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

namespace Fibbo
{
    class Program
    {
        static void Main(string[] args)
        {
            ulong f0 = 0, f1 = 1, i,n,f;
            Console.WriteLine("Wyraz ciągu > 2: ");
            while (!ulong.TryParse(Console.ReadLine(), out n)||n<=2)
                Console.WriteLine("Błędna wartość, podaj jeszcze raz...");


            Console.WriteLine("Fib({1,5}) = {0,25}", f0,0);
            Console.WriteLine("Fib({1,5}) = {0,25}", f1,1);
            for (i=2;i<=n;i++)
            {
                f = f0 + f1;
                f0 = f1;
                f1 = f;
                Console.WriteLine("Fib({0,5}) = {1,25}", i, f);

            }
            

            Console.ReadKey();





        }
    }
}