import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[]d = new int[6];
		d[0]=2;
		for(int i=1;i<6;i++) {
			d[i]=d[i-1]*2;
		}
		if(N==1)System.out.print(1);
		else if(d[5]<=N)System.out.print(d[5]);
		else {
			for(int i=0;i<6;i++) {
				if(N<d[i]) {
					System.out.print(d[i-1]);
					break;
				}
			}
		}
		sc.close();
	}
}
/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