
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		sc.close();
		int[]a = new int[7];
		a[0] = 1;
		for(int i = 1; i < 7; i++) {
			a[i] = a[i - 1] * 2;
		}
		for(int i = 0; i < 7; i++) {
			if(N == a[i]) {
				System.out.println(N);
				System.exit(0);
			}else if(N < a[i]) {
				System.out.println(a[i - 1]);
				System.exit(0);
			}
		}
		System.out.println(a[6]);
	}
}
/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