03. Recursive Fibonacci

using System;

namespace RecursiveFibonacci
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int[] arr = new int[n + 2];
            arr[0] = 1;

            for (int i = 0; i < n; i++)
            {
                arr[i + 2] = arr[i] + arr[i + 1];
            }
            Console.WriteLine(arr[n + 1]);
        }
    }
}