import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n;
        n = sc.nextInt();
        

        if(n >= 64){
            System.out.println(64);
        }else if(n >= 32){
            System.out.println(32);
        }else if(n >= 16){
            System.out.println(16);
        }else if(n >= 8){
            System.out.println(8);
        }else if(n >= 4){
            System.out.println(4);
        }else if(n == 3 || n == 2){
            System.out.println(2);
        }else if(n == 1){
            System.out.println(1);
        }
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz