import java.util.*;

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

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