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 ans = 0;
		int ansCandidate[] = {1, 2, 4, 8, 16, 32, 64};
		for (int i = 0; i < 7; i++) {
			if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			}
		}
		System.out.println(ans);
	}
} 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 ans = 0;
		int ansCandidate[] = {1, 2, 4, 8, 16, 32, 64};
		for (int i = 0; i < 7; i++) {
			if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			}
		}
		System.out.println(ans);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
		int ans = 0;
		int ansCandidate[] = {1, 2, 4, 8, 16, 32, 64};
		for (int i = 0; i < 7; i++) {
			if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			}
		}
		System.out.println(ans);
	} main {
		Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
		int ans = 0;
		int ansCandidate[] = {1, 2, 4, 8, 16, 32, 64};
		for (int i = 0; i < 7; i++) {
			if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			}
		}
		System.out.println(ans);
	} 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 = 0; ans 0 int ansCandidate[] = {1, 2, 4, 8, 16, 32, 64}; ansCandidate {1, 2, 4, 8, 16, 32, 64} 1 2 4 8 16 32 64 for (int i = 0; i < 7; i++) {
			if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			}
		} int i = 0; int i = 0; i 0 i < 7 i 7 i++ i++ i {
			if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			}
		} {
			if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			}
		} if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			} ansCandidate[i] <= n ansCandidate[i] ansCandidate i n {
				ans = ansCandidate[i];
			} ans = ansCandidate[i] ans ansCandidate[i] ansCandidate i System.out.println(ans) System.out.println System.out System System.out ans 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 = 0;
		int ansCandidate[] = {1, 2, 4, 8, 16, 32, 64};
		for (int i = 0; i < 7; i++) {
			if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			}
		}
		System.out.println(ans);
	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
		int ans = 0;
		int ansCandidate[] = {1, 2, 4, 8, 16, 32, 64};
		for (int i = 0; i < 7; i++) {
			if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			}
		}
		System.out.println(ans);
	}
} 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 ans = 0;
		int ansCandidate[] = {1, 2, 4, 8, 16, 32, 64};
		for (int i = 0; i < 7; i++) {
			if (ansCandidate[i] <= n) {
				ans = ansCandidate[i];
			}
		}
		System.out.println(ans);
	}
}
