import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int n=sc.nextInt();
		int tmp=1;
		if(n==tmp) {
			System.out.println("1");
		}else {
			while(tmp<=n) {
				tmp*=2;
			}
			System.out.println(tmp/2);
		}
	}
} 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 tmp=1;
		if(n==tmp) {
			System.out.println("1");
		}else {
			while(tmp<=n) {
				tmp*=2;
			}
			System.out.println(tmp/2);
		}
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int n=sc.nextInt();
		int tmp=1;
		if(n==tmp) {
			System.out.println("1");
		}else {
			while(tmp<=n) {
				tmp*=2;
			}
			System.out.println(tmp/2);
		}
	} main {
		Scanner sc = new Scanner(System.in);

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

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

		int n=sc.nextInt();
		int tmp=1;
		if(n==tmp) {
			System.out.println("1");
		}else {
			while(tmp<=n) {
				tmp*=2;
			}
			System.out.println(tmp/2);
		}
	}
} 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 tmp=1;
		if(n==tmp) {
			System.out.println("1");
		}else {
			while(tmp<=n) {
				tmp*=2;
			}
			System.out.println(tmp/2);
		}
	}
}