FibonacciNumbers

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

namespace Hello_Name_
{
    class Program
    {
        static void Main(string[] args)
        {
            int number = int.Parse(Console.ReadLine());
            Console.WriteLine(PrintFib(number));
        }
        static int PrintFib(int number)
        {
            int a = 0;
            int b = 1;
            for (int i = 0; i<=number; i++)
            {
                int fibNumber =a;
                a =b;
                b = fibNumber+b;
            }
            return a;
        }
    }
}