import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		
		System.out.println((int)(Math.pow(2, (int)(Math.log10(n) / Math.log10(2)))));

	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		
		System.out.println((int)(Math.pow(2, (int)(Math.log10(n) / Math.log10(2)))));

	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		
		System.out.println((int)(Math.pow(2, (int)(Math.log10(n) / Math.log10(2)))));

	} main {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		
		System.out.println((int)(Math.pow(2, (int)(Math.log10(n) / Math.log10(2)))));

	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc System.out.println((int)(Math.pow(2, (int)(Math.log10(n) / Math.log10(2))))) System.out.println System.out System System.out (int)(Math.pow(2, (int)(Math.log10(n) / Math.log10(2)))) Math.pow Math 2 (int)(Math.log10(n) / Math.log10(2)) Math.log10(n) Math.log10 Math n Math.log10(2) Math.log10 Math 2 String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		
		System.out.println((int)(Math.pow(2, (int)(Math.log10(n) / Math.log10(2)))));

	}

} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		
		System.out.println((int)(Math.pow(2, (int)(Math.log10(n) / Math.log10(2)))));

	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		
		System.out.println((int)(Math.pow(2, (int)(Math.log10(n) / Math.log10(2)))));

	}

}
