using System;

public class Program

{

​

 static void Main(string[] args)

        {

            int a = 1;

            int b = 0;

            int n =5;

            for (int i = 0; i < n; i++)

            {

                a = a + b;

                Console.Write(a);

                Console.Write(" ");

                b = a + b;

                Console.Write(b);

                Console.Write(" ");

            }

            Console.ReadKey();

        }}