using System;

public class Program

{

    static int UocLeMax(int n)

    {

           if(n%2==1)

               return n;

            else

                return UocLeMax(n/2);

            return  UocLeMax(n);

        }

    public static void Main()

    {

        int n;

        Console.Write("Nhap vao so nguyen n =");

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

        Console.WriteLine("Uoc le lon nhat cua so {0} la : {1}",n,UocLeMax(n));

    }

}