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;
		while (true) {
			if (ans * 2 > n) {
				break;
			}
			ans *= 2;
		}

		System.out.println(ans);

		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 = sc.nextInt();

		int ans = 1;
		while (true) {
			if (ans * 2 > n) {
				break;
			}
			ans *= 2;
		}

		System.out.println(ans);

		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();

		int ans = 1;
		while (true) {
			if (ans * 2 > n) {
				break;
			}
			ans *= 2;
		}

		System.out.println(ans);

		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();

		int ans = 1;
		while (true) {
			if (ans * 2 > n) {
				break;
			}
			ans *= 2;
		}

		System.out.println(ans);

		sc.close();
	} 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 while (true) {
			if (ans * 2 > n) {
				break;
			}
			ans *= 2;
		} true {
			if (ans * 2 > n) {
				break;
			}
			ans *= 2;
		} if (ans * 2 > n) {
				break;
			} ans * 2 > n ans * 2 ans 2 n {
				break;
			} break; ans *= 2 ans 2 System.out.println(ans) System.out.println System.out System System.out ans 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 = sc.nextInt();

		int ans = 1;
		while (true) {
			if (ans * 2 > n) {
				break;
			}
			ans *= 2;
		}

		System.out.println(ans);

		sc.close();
	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();

		int ans = 1;
		while (true) {
			if (ans * 2 > n) {
				break;
			}
			ans *= 2;
		}

		System.out.println(ans);

		sc.close();
	}
} 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;
		while (true) {
			if (ans * 2 > n) {
				break;
			}
			ans *= 2;
		}

		System.out.println(ans);

		sc.close();
	}
}