import java.io.PrintWriter;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int tmp = 0;
        int count = 0;
        int maxCount = 0;
        int result = 0;

        for (int i = 1; i <= N; i++) {
            tmp = i;
            while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            }
            if (count > maxCount) {
                maxCount = count;
                result = i;
            }
            tmp = 0;
            count = 0;
        }
        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    }
} import java.io.PrintWriter; PrintWriter java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int tmp = 0;
        int count = 0;
        int maxCount = 0;
        int result = 0;

        for (int i = 1; i <= N; i++) {
            tmp = i;
            while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            }
            if (count > maxCount) {
                maxCount = count;
                result = i;
            }
            tmp = 0;
            count = 0;
        }
        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int tmp = 0;
        int count = 0;
        int maxCount = 0;
        int result = 0;

        for (int i = 1; i <= N; i++) {
            tmp = i;
            while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            }
            if (count > maxCount) {
                maxCount = count;
                result = i;
            }
            tmp = 0;
            count = 0;
        }
        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int tmp = 0;
        int count = 0;
        int maxCount = 0;
        int result = 0;

        for (int i = 1; i <= N; i++) {
            tmp = i;
            while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            }
            if (count > maxCount) {
                maxCount = count;
                result = i;
            }
            tmp = 0;
            count = 0;
        }
        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = Integer.parseInt(sc.next()); N Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int tmp = 0; tmp 0 int count = 0; count 0 int maxCount = 0; maxCount 0 int result = 0; result 0 for (int i = 1; i <= N; i++) {
            tmp = i;
            while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            }
            if (count > maxCount) {
                maxCount = count;
                result = i;
            }
            tmp = 0;
            count = 0;
        } int i = 1; int i = 1; i 1 i <= N i N i++ i++ i {
            tmp = i;
            while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            }
            if (count > maxCount) {
                maxCount = count;
                result = i;
            }
            tmp = 0;
            count = 0;
        } {
            tmp = i;
            while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            }
            if (count > maxCount) {
                maxCount = count;
                result = i;
            }
            tmp = 0;
            count = 0;
        } tmp = i tmp i while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            } tmp > 0 tmp 0 {
                tmp = tmp / 2;
                count++;
            } tmp = tmp / 2 tmp tmp / 2 tmp 2 count++ count if (count > maxCount) {
                maxCount = count;
                result = i;
            } count > maxCount count maxCount {
                maxCount = count;
                result = i;
            } maxCount = count maxCount count result = i result i tmp = 0 tmp 0 count = 0 count 0 PrintWriter out = new PrintWriter(System.out); out new PrintWriter(System.out) out.println(result) out.println out result out.flush() out.flush out 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 = Integer.parseInt(sc.next());
        int tmp = 0;
        int count = 0;
        int maxCount = 0;
        int result = 0;

        for (int i = 1; i <= N; i++) {
            tmp = i;
            while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            }
            if (count > maxCount) {
                maxCount = count;
                result = i;
            }
            tmp = 0;
            count = 0;
        }
        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int tmp = 0;
        int count = 0;
        int maxCount = 0;
        int result = 0;

        for (int i = 1; i <= N; i++) {
            tmp = i;
            while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            }
            if (count > maxCount) {
                maxCount = count;
                result = i;
            }
            tmp = 0;
            count = 0;
        }
        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    }
} Main
import java.io.PrintWriter;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int tmp = 0;
        int count = 0;
        int maxCount = 0;
        int result = 0;

        for (int i = 1; i <= N; i++) {
            tmp = i;
            while (tmp > 0) {
                tmp = tmp / 2;
                count++;
            }
            if (count > maxCount) {
                maxCount = count;
                result = i;
            }
            tmp = 0;
            count = 0;
        }
        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    }
}