import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        int ans = 1;
        while(ans <= n) {
            ans *= 2;
        }
        System.out.println(ans/2);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        int ans = 1;
        while(ans <= n) {
            ans *= 2;
        }
        System.out.println(ans/2);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        int ans = 1;
        while(ans <= n) {
            ans *= 2;
        }
        System.out.println(ans/2);
    } main {
        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        int ans = 1;
        while(ans <= n) {
            ans *= 2;
        }
        System.out.println(ans/2);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = Integer.parseInt(sc.next()); n Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int ans = 1; ans 1 while(ans <= n) {
            ans *= 2;
        } ans <= n ans n {
            ans *= 2;
        } 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 = Integer.parseInt(sc.next());
        int ans = 1;
        while(ans <= n) {
            ans *= 2;
        }
        System.out.println(ans/2);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        int ans = 1;
        while(ans <= n) {
            ans *= 2;
        }
        System.out.println(ans/2);
    }
} Main
import java.util.*;

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