
import java.io.*;
import java.util.*;
import static java.lang.Math.*;

public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve(args);
    }

    public void solve(String[] args) {
        MyScanner scanner = new MyScanner();
        int N = scanner.nextInt();
        int a = 1;
        for (int i = 0; i < 10; i++) {
            int b = a * 2;
            if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            }
        }
        System.out.println(a);
    }

    private class MyScanner {
        String[] s;
        int i;
        BufferedReader br;
        String reg = " ";

        MyScanner () {
            s = new String[0];
            i = 0;
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        public String next() {
            try {
                if (i < s.length) return s[i++];
                String line = br.readLine();
                while (line.equals("")) {
                    line = br.readLine();
                }
                s = line.split(reg, 0);
                i = 0;
                return s[i++];
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

        public int nextInt() {
            try {
                return Integer.parseInt(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public double nextDouble() {
            try {
                return Double.parseDouble(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public long nextLong()  {
            try {
                return Long.parseLong(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }
    }
} import java.io.*; io.* java import java.util.*; util.* java import static java.lang.Math.*; import static java.lang.Math.*; import static java.lang.Math.*; public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve(args);
    }

    public void solve(String[] args) {
        MyScanner scanner = new MyScanner();
        int N = scanner.nextInt();
        int a = 1;
        for (int i = 0; i < 10; i++) {
            int b = a * 2;
            if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            }
        }
        System.out.println(a);
    }

    private class MyScanner {
        String[] s;
        int i;
        BufferedReader br;
        String reg = " ";

        MyScanner () {
            s = new String[0];
            i = 0;
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        public String next() {
            try {
                if (i < s.length) return s[i++];
                String line = br.readLine();
                while (line.equals("")) {
                    line = br.readLine();
                }
                s = line.split(reg, 0);
                i = 0;
                return s[i++];
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

        public int nextInt() {
            try {
                return Integer.parseInt(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public double nextDouble() {
            try {
                return Double.parseDouble(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public long nextLong()  {
            try {
                return Long.parseLong(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }
    }
} Main public static void main(String[] args) {
        Main main = new Main();
        main.solve(args);
    } main {
        Main main = new Main();
        main.solve(args);
    } Main main = new Main(); main new Main() main.solve(args) main.solve main args String[] args args public void solve(String[] args) {
        MyScanner scanner = new MyScanner();
        int N = scanner.nextInt();
        int a = 1;
        for (int i = 0; i < 10; i++) {
            int b = a * 2;
            if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            }
        }
        System.out.println(a);
    } solve {
        MyScanner scanner = new MyScanner();
        int N = scanner.nextInt();
        int a = 1;
        for (int i = 0; i < 10; i++) {
            int b = a * 2;
            if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            }
        }
        System.out.println(a);
    } MyScanner scanner = new MyScanner(); scanner new MyScanner() int N = scanner.nextInt(); N scanner.nextInt() scanner.nextInt scanner int a = 1; a 1 for (int i = 0; i < 10; i++) {
            int b = a * 2;
            if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            }
        } int i = 0; int i = 0; i 0 i < 10 i 10 i++ i++ i {
            int b = a * 2;
            if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            }
        } {
            int b = a * 2;
            if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            }
        } int b = a * 2; b a * 2 a 2 if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            } b > N b N {
                System.out.println(a);
                return;
            } System.out.println(a) System.out.println System.out System System.out a return; {
                a = b;
            } a = b a b System.out.println(a) System.out.println System.out System System.out a String[] args args private class MyScanner {
        String[] s;
        int i;
        BufferedReader br;
        String reg = " ";

        MyScanner () {
            s = new String[0];
            i = 0;
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        public String next() {
            try {
                if (i < s.length) return s[i++];
                String line = br.readLine();
                while (line.equals("")) {
                    line = br.readLine();
                }
                s = line.split(reg, 0);
                i = 0;
                return s[i++];
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

        public int nextInt() {
            try {
                return Integer.parseInt(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public double nextDouble() {
            try {
                return Double.parseDouble(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public long nextLong()  {
            try {
                return Long.parseLong(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }
    } MyScanner String[] s; s int i; i BufferedReader br; br String reg = " "; reg " " MyScanner () {
            s = new String[0];
            i = 0;
            br = new BufferedReader(new InputStreamReader(System.in));
        } MyScanner {
            s = new String[0];
            i = 0;
            br = new BufferedReader(new InputStreamReader(System.in));
        } s = new String[0] s new String[0] 0 i = 0 i 0 br = new BufferedReader(new InputStreamReader(System.in)) br new BufferedReader(new InputStreamReader(System.in)) public String next() {
            try {
                if (i < s.length) return s[i++];
                String line = br.readLine();
                while (line.equals("")) {
                    line = br.readLine();
                }
                s = line.split(reg, 0);
                i = 0;
                return s[i++];
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        } next {
            try {
                if (i < s.length) return s[i++];
                String line = br.readLine();
                while (line.equals("")) {
                    line = br.readLine();
                }
                s = line.split(reg, 0);
                i = 0;
                return s[i++];
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        } try {
                if (i < s.length) return s[i++];
                String line = br.readLine();
                while (line.equals("")) {
                    line = br.readLine();
                }
                s = line.split(reg, 0);
                i = 0;
                return s[i++];
            } catch (Exception e) {
                e.printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            } Exception e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                if (i < s.length) return s[i++];
                String line = br.readLine();
                while (line.equals("")) {
                    line = br.readLine();
                }
                s = line.split(reg, 0);
                i = 0;
                return s[i++];
            } if (i < s.length) return s[i++]; i < s.length i s.length s s.length return s[i++]; s[i++] s i++ i String line = br.readLine(); line br.readLine() br.readLine br while (line.equals("")) {
                    line = br.readLine();
                } line.equals("") line.equals line "" {
                    line = br.readLine();
                } line = br.readLine() line br.readLine() br.readLine br s = line.split(reg, 0) s line.split(reg, 0) line.split line reg 0 i = 0 i 0 return s[i++]; s[i++] s i++ i return null; null public int nextInt() {
            try {
                return Integer.parseInt(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        } nextInt {
            try {
                return Integer.parseInt(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        } try {
                return Integer.parseInt(next());
            } catch (Exception e) {
                e.printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            } Exception e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                return Integer.parseInt(next());
            } return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next return -1; -1 1 public double nextDouble() {
            try {
                return Double.parseDouble(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        } nextDouble {
            try {
                return Double.parseDouble(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        } try {
                return Double.parseDouble(next());
            } catch (Exception e) {
                e.printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            } Exception e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                return Double.parseDouble(next());
            } return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next return -1; -1 1 public long nextLong()  {
            try {
                return Long.parseLong(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        } nextLong {
            try {
                return Long.parseLong(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        } try {
                return Long.parseLong(next());
            } catch (Exception e) {
                e.printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            } Exception e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                return Long.parseLong(next());
            } return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next return -1; -1 1 public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve(args);
    }

    public void solve(String[] args) {
        MyScanner scanner = new MyScanner();
        int N = scanner.nextInt();
        int a = 1;
        for (int i = 0; i < 10; i++) {
            int b = a * 2;
            if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            }
        }
        System.out.println(a);
    }

    private class MyScanner {
        String[] s;
        int i;
        BufferedReader br;
        String reg = " ";

        MyScanner () {
            s = new String[0];
            i = 0;
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        public String next() {
            try {
                if (i < s.length) return s[i++];
                String line = br.readLine();
                while (line.equals("")) {
                    line = br.readLine();
                }
                s = line.split(reg, 0);
                i = 0;
                return s[i++];
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

        public int nextInt() {
            try {
                return Integer.parseInt(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public double nextDouble() {
            try {
                return Double.parseDouble(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public long nextLong()  {
            try {
                return Long.parseLong(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }
    }
} public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve(args);
    }

    public void solve(String[] args) {
        MyScanner scanner = new MyScanner();
        int N = scanner.nextInt();
        int a = 1;
        for (int i = 0; i < 10; i++) {
            int b = a * 2;
            if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            }
        }
        System.out.println(a);
    }

    private class MyScanner {
        String[] s;
        int i;
        BufferedReader br;
        String reg = " ";

        MyScanner () {
            s = new String[0];
            i = 0;
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        public String next() {
            try {
                if (i < s.length) return s[i++];
                String line = br.readLine();
                while (line.equals("")) {
                    line = br.readLine();
                }
                s = line.split(reg, 0);
                i = 0;
                return s[i++];
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

        public int nextInt() {
            try {
                return Integer.parseInt(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public double nextDouble() {
            try {
                return Double.parseDouble(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public long nextLong()  {
            try {
                return Long.parseLong(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }
    }
} Main

import java.io.*;
import java.util.*;
import static java.lang.Math.*;

public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve(args);
    }

    public void solve(String[] args) {
        MyScanner scanner = new MyScanner();
        int N = scanner.nextInt();
        int a = 1;
        for (int i = 0; i < 10; i++) {
            int b = a * 2;
            if (b > N) {
                System.out.println(a);
                return;
            } else {
                a = b;
            }
        }
        System.out.println(a);
    }

    private class MyScanner {
        String[] s;
        int i;
        BufferedReader br;
        String reg = " ";

        MyScanner () {
            s = new String[0];
            i = 0;
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        public String next() {
            try {
                if (i < s.length) return s[i++];
                String line = br.readLine();
                while (line.equals("")) {
                    line = br.readLine();
                }
                s = line.split(reg, 0);
                i = 0;
                return s[i++];
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

        public int nextInt() {
            try {
                return Integer.parseInt(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public double nextDouble() {
            try {
                return Double.parseDouble(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }

        public long nextLong()  {
            try {
                return Long.parseLong(next());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return -1;
        }
    }
}
