import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.PriorityQueue;
import java.util.Scanner;

class Main {
    static final int MOD = 1000000007;
    static final int INF = 1 << 30;

    Main() {
        Scanner sc = new Scanner(System.in);
        int ans = 1;
        int N = sc.nextInt();
        while(ans*2<=N)ans*=2;
        System.out.println(ans);
    }

    public static void main(String[] args) {
        new Main();
    }
} import java.math.BigInteger; BigInteger java.math import java.util.ArrayList; ArrayList java.util import java.util.Arrays; Arrays java.util import java.util.Collections; Collections java.util import java.util.Comparator; Comparator java.util import java.util.HashMap; HashMap java.util import java.util.HashSet; HashSet java.util import java.util.Iterator; Iterator java.util import java.util.List; List java.util import java.util.Map; Map java.util import java.util.Map.Entry; Entry java.util.Map import java.util.PriorityQueue; PriorityQueue java.util import java.util.Scanner; Scanner java.util class Main {
    static final int MOD = 1000000007;
    static final int INF = 1 << 30;

    Main() {
        Scanner sc = new Scanner(System.in);
        int ans = 1;
        int N = sc.nextInt();
        while(ans*2<=N)ans*=2;
        System.out.println(ans);
    }

    public static void main(String[] args) {
        new Main();
    }
} Main static final int MOD = 1000000007; MOD 1000000007 static final int INF = 1 << 30; INF 1 << 30 1 30 Main() {
        Scanner sc = new Scanner(System.in);
        int ans = 1;
        int N = sc.nextInt();
        while(ans*2<=N)ans*=2;
        System.out.println(ans);
    } Main {
        Scanner sc = new Scanner(System.in);
        int ans = 1;
        int N = sc.nextInt();
        while(ans*2<=N)ans*=2;
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int ans = 1; ans 1 int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc while(ans*2<=N)ans*=2; ans*2<=N ans*2 ans 2 N ans*=2 ans 2 System.out.println(ans) System.out.println System.out System System.out ans public static void main(String[] args) {
        new Main();
    } main {
        new Main();
    } new Main() String[] args args
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.PriorityQueue;
import java.util.Scanner;

class Main {
    static final int MOD = 1000000007;
    static final int INF = 1 << 30;

    Main() {
        Scanner sc = new Scanner(System.in);
        int ans = 1;
        int N = sc.nextInt();
        while(ans*2<=N)ans*=2;
        System.out.println(ans);
    }

    public static void main(String[] args) {
        new Main();
    }
}
