import java.util.Scanner;

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

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		StringBuilder sb = new StringBuilder();
		int n = sc.nextInt();
		int i = 2;
		for (; i <= n; i = i * 2) {
		}
		System.out.println(i / 2);
	}
}
