using System;

public class Program

{

        public static void Main(string[] args)

        {

            int length = 3;

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

            {

                Console.WriteLine(FibonacciSeries(i));

            }

        }

    static int FibonacciSeries(int n)

        {

            if (n == 0) return 0; //To return the first Fibonacci number   

            if (n == 1) return 1; //To return the second Fibonacci number   

            return (FibonacciSeries(n-1)+ FibonacciSeries(n-2)) ;

        }

}