import java.util.Scanner;

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

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