using System;

public class Program

{

    public static void fibonacci(int len)  

    {  

    int a = 0, b = 1, c = 0;  

    Console.Write("{0} ", a);  

    for (int i = 2; i < len; i++)  

    {  

        c= a + b;  

        Console.Write(" {0}", c);  

        a= b;  

        b= c;  

    }  

}  

    public static void Main()

    {

        int l;

        Console.WriteLine("enter length of fibonacci series ");

        l=int.Parse(Console.ReadLine());

        fibonacci(l);

    }

}