import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int result = 1;
		for(int i = 1; i <= N; i *= 2) {
			result = i;
		}
		System.out.println(result);
	}

} 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 result = 1;
		for(int i = 1; i <= N; i *= 2) {
			result = i;
		}
		System.out.println(result);
	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int result = 1;
		for(int i = 1; i <= N; i *= 2) {
			result = i;
		}
		System.out.println(result);
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int result = 1;
		for(int i = 1; i <= N; i *= 2) {
			result = i;
		}
		System.out.println(result);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int result = 1; result 1 for(int i = 1; i <= N; i *= 2) {
			result = i;
		} int i = 1; int i = 1; i 1 i <= N i N i *= 2 i *= 2 i 2 {
			result = i;
		} {
			result = i;
		} result = i result i System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int result = 1;
		for(int i = 1; i <= N; i *= 2) {
			result = i;
		}
		System.out.println(result);
	}

} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int result = 1;
		for(int i = 1; i <= N; i *= 2) {
			result = i;
		}
		System.out.println(result);
	}

} 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 result = 1;
		for(int i = 1; i <= N; i *= 2) {
			result = i;
		}
		System.out.println(result);
	}

}
