import java.util.Scanner;

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