import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 1;
        int a = 0;
        while (ans <= n) {
            ans = ans * 2;
        }
        System.out.println(ans / 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();
        int ans = 1;
        int a = 0;
        while (ans <= n) {
            ans = ans * 2;
        }
        System.out.println(ans / 2);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 1;
        int a = 0;
        while (ans <= n) {
            ans = ans * 2;
        }
        System.out.println(ans / 2);
    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 1;
        int a = 0;
        while (ans <= n) {
            ans = ans * 2;
        }
        System.out.println(ans / 2);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int ans = 1; ans 1 int a = 0; a 0 while (ans <= n) {
            ans = ans * 2;
        } ans <= n ans n {
            ans = ans * 2;
        } ans = ans * 2 ans ans * 2 ans 2 System.out.println(ans / 2) System.out.println System.out System System.out ans / 2 ans 2 String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 1;
        int a = 0;
        while (ans <= n) {
            ans = ans * 2;
        }
        System.out.println(ans / 2);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 1;
        int a = 0;
        while (ans <= n) {
            ans = ans * 2;
        }
        System.out.println(ans / 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();
        int ans = 1;
        int a = 0;
        while (ans <= n) {
            ans = ans * 2;
        }
        System.out.println(ans / 2);
    }
}