using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    public static void Main(string[] args)
    {
        int n = int.Parse(Console.ReadLine());
        bool hasMaxEvenNumFound = false;
        List<int> intList = new List<int>();

        for (int i = 1; i <= n; i++)
        {
            int tmp = i;
            int cnt = 0;
            int cnt2 = 0;

            bool isEven = true;
            while (isEven)
            {
                if (i % 2 == 0 && tmp != 0)
                {
                    tmp /= 2;
                    cnt++;
                }
                else
                {
                    isEven = false;
                    intList.Add(cnt);
                }
            }

        }

        Console.WriteLine(intList.IndexOf(intList.Max())+1);
    }
}