import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		scan.close();
		int i=1;
		while(n>=i) {
			i*=2;
		}
		System.out.println(i/2);

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

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		scan.close();
		int i=1;
		while(n>=i) {
			i*=2;
		}
		System.out.println(i/2);

	}
} Main public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		scan.close();
		int i=1;
		while(n>=i) {
			i*=2;
		}
		System.out.println(i/2);

	} main {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		scan.close();
		int i=1;
		while(n>=i) {
			i*=2;
		}
		System.out.println(i/2);

	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int n = scan.nextInt(); n scan.nextInt() scan.nextInt scan scan.close() scan.close scan int i=1; i 1 while(n>=i) {
			i*=2;
		} n>=i n i {
			i*=2;
		} i*=2 i 2 System.out.println(i/2) System.out.println System.out System System.out i/2 i 2 String[] args args public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		scan.close();
		int i=1;
		while(n>=i) {
			i*=2;
		}
		System.out.println(i/2);

	}
} public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		scan.close();
		int i=1;
		while(n>=i) {
			i*=2;
		}
		System.out.println(i/2);

	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		scan.close();
		int i=1;
		while(n>=i) {
			i*=2;
		}
		System.out.println(i/2);

	}
}