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