import java.io.*;
import java.util.*;

public class Main {

	public static void main(String[] args) throws IOException{
		FastScanner f = new FastScanner(); //Replace "problem" with problem name
        
        int[] powers = {1,2,4,8,16,32,64,128};
        int n = f.nextInt();
        int j = 0;
        for(int i = 0; i < powers.length; i++){
        	if (powers[i] > n){
        		j = i;
        		break;
        	}
        }
        System.out.println(powers[j-1]);
	}

	public static class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        public FastScanner(String s) {
            try {
                br = new BufferedReader(new FileReader(s));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }

        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String nextToken() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        String nextLine() {
            st = null;
            try {
                return br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        int nextInt() {
            return Integer.parseInt(nextToken());
        }

        long nextLong() {
            return Long.parseLong(nextToken());
        }

        double nextDouble() {
            return Double.parseDouble(nextToken());
        }
    }
} import java.io.*; io.* java import java.util.*; util.* java public class Main {

	public static void main(String[] args) throws IOException{
		FastScanner f = new FastScanner(); //Replace "problem" with problem name
        
        int[] powers = {1,2,4,8,16,32,64,128};
        int n = f.nextInt();
        int j = 0;
        for(int i = 0; i < powers.length; i++){
        	if (powers[i] > n){
        		j = i;
        		break;
        	}
        }
        System.out.println(powers[j-1]);
	}

	public static class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        public FastScanner(String s) {
            try {
                br = new BufferedReader(new FileReader(s));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }

        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String nextToken() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        String nextLine() {
            st = null;
            try {
                return br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        int nextInt() {
            return Integer.parseInt(nextToken());
        }

        long nextLong() {
            return Long.parseLong(nextToken());
        }

        double nextDouble() {
            return Double.parseDouble(nextToken());
        }
    }
} Main public static void main(String[] args) throws IOException{
		FastScanner f = new FastScanner(); //Replace "problem" with problem name
        
        int[] powers = {1,2,4,8,16,32,64,128};
        int n = f.nextInt();
        int j = 0;
        for(int i = 0; i < powers.length; i++){
        	if (powers[i] > n){
        		j = i;
        		break;
        	}
        }
        System.out.println(powers[j-1]);
	} main {
		FastScanner f = new FastScanner(); //Replace "problem" with problem name
        
        int[] powers = {1,2,4,8,16,32,64,128};
        int n = f.nextInt();
        int j = 0;
        for(int i = 0; i < powers.length; i++){
        	if (powers[i] > n){
        		j = i;
        		break;
        	}
        }
        System.out.println(powers[j-1]);
	} FastScanner f = new FastScanner(); f new FastScanner() int[] powers = {1,2,4,8,16,32,64,128}; powers {1,2,4,8,16,32,64,128} 1 2 4 8 16 32 64 128 int n = f.nextInt(); n f.nextInt() f.nextInt f int j = 0; j 0 for(int i = 0; i < powers.length; i++){
        	if (powers[i] > n){
        		j = i;
        		break;
        	}
        } int i = 0; int i = 0; i 0 i < powers.length i powers.length powers powers.length i++ i++ i {
        	if (powers[i] > n){
        		j = i;
        		break;
        	}
        } {
        	if (powers[i] > n){
        		j = i;
        		break;
        	}
        } if (powers[i] > n){
        		j = i;
        		break;
        	} powers[i] > n powers[i] powers i n {
        		j = i;
        		break;
        	} j = i j i break; System.out.println(powers[j-1]) System.out.println System.out System System.out powers[j-1] powers j-1 j 1 String[] args args public static class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        public FastScanner(String s) {
            try {
                br = new BufferedReader(new FileReader(s));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }

        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String nextToken() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        String nextLine() {
            st = null;
            try {
                return br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        int nextInt() {
            return Integer.parseInt(nextToken());
        }

        long nextLong() {
            return Long.parseLong(nextToken());
        }

        double nextDouble() {
            return Double.parseDouble(nextToken());
        }
    } FastScanner BufferedReader br; br StringTokenizer st; st public FastScanner(String s) {
            try {
                br = new BufferedReader(new FileReader(s));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        } FastScanner {
            try {
                br = new BufferedReader(new FileReader(s));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        } try {
                br = new BufferedReader(new FileReader(s));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } FileNotFoundException e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                br = new BufferedReader(new FileReader(s));
            } br = new BufferedReader(new FileReader(s)) br new BufferedReader(new FileReader(s)) String s s public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        } FastScanner {
            br = new BufferedReader(new InputStreamReader(System.in));
        } br = new BufferedReader(new InputStreamReader(System.in)) br new BufferedReader(new InputStreamReader(System.in)) String nextToken() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } nextToken {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } st == null || !st.hasMoreElements() st == null st null !st.hasMoreElements() st.hasMoreElements() st.hasMoreElements st {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                } IOException e {
                    e.printStackTrace();
                } e.printStackTrace() e.printStackTrace e {
                    st = new StringTokenizer(br.readLine());
                } st = new StringTokenizer(br.readLine()) st new StringTokenizer(br.readLine()) return st.nextToken(); st.nextToken() st.nextToken st String nextLine() {
            st = null;
            try {
                return br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        } nextLine {
            st = null;
            try {
                return br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        } st = null st null try {
                return br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } IOException e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                return br.readLine();
            } return br.readLine(); br.readLine() br.readLine br return null; null int nextInt() {
            return Integer.parseInt(nextToken());
        } nextInt {
            return Integer.parseInt(nextToken());
        } return Integer.parseInt(nextToken()); Integer.parseInt(nextToken()) Integer.parseInt Integer nextToken() nextToken long nextLong() {
            return Long.parseLong(nextToken());
        } nextLong {
            return Long.parseLong(nextToken());
        } return Long.parseLong(nextToken()); Long.parseLong(nextToken()) Long.parseLong Long nextToken() nextToken double nextDouble() {
            return Double.parseDouble(nextToken());
        } nextDouble {
            return Double.parseDouble(nextToken());
        } return Double.parseDouble(nextToken()); Double.parseDouble(nextToken()) Double.parseDouble Double nextToken() nextToken public class Main {

	public static void main(String[] args) throws IOException{
		FastScanner f = new FastScanner(); //Replace "problem" with problem name
        
        int[] powers = {1,2,4,8,16,32,64,128};
        int n = f.nextInt();
        int j = 0;
        for(int i = 0; i < powers.length; i++){
        	if (powers[i] > n){
        		j = i;
        		break;
        	}
        }
        System.out.println(powers[j-1]);
	}

	public static class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        public FastScanner(String s) {
            try {
                br = new BufferedReader(new FileReader(s));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }

        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String nextToken() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        String nextLine() {
            st = null;
            try {
                return br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        int nextInt() {
            return Integer.parseInt(nextToken());
        }

        long nextLong() {
            return Long.parseLong(nextToken());
        }

        double nextDouble() {
            return Double.parseDouble(nextToken());
        }
    }
} public class Main {

	public static void main(String[] args) throws IOException{
		FastScanner f = new FastScanner(); //Replace "problem" with problem name
        
        int[] powers = {1,2,4,8,16,32,64,128};
        int n = f.nextInt();
        int j = 0;
        for(int i = 0; i < powers.length; i++){
        	if (powers[i] > n){
        		j = i;
        		break;
        	}
        }
        System.out.println(powers[j-1]);
	}

	public static class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        public FastScanner(String s) {
            try {
                br = new BufferedReader(new FileReader(s));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }

        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String nextToken() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        String nextLine() {
            st = null;
            try {
                return br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        int nextInt() {
            return Integer.parseInt(nextToken());
        }

        long nextLong() {
            return Long.parseLong(nextToken());
        }

        double nextDouble() {
            return Double.parseDouble(nextToken());
        }
    }
} Main
import java.io.*;
import java.util.*;

public class Main {

	public static void main(String[] args) throws IOException{
		FastScanner f = new FastScanner(); //Replace "problem" with problem name
        
        int[] powers = {1,2,4,8,16,32,64,128};
        int n = f.nextInt();
        int j = 0;
        for(int i = 0; i < powers.length; i++){
        	if (powers[i] > n){
        		j = i;
        		break;
        	}
        }
        System.out.println(powers[j-1]);
	}

	public static class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        public FastScanner(String s) {
            try {
                br = new BufferedReader(new FileReader(s));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }

        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String nextToken() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        String nextLine() {
            st = null;
            try {
                return br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        int nextInt() {
            return Integer.parseInt(nextToken());
        }

        long nextLong() {
            return Long.parseLong(nextToken());
        }

        double nextDouble() {
            return Double.parseDouble(nextToken());
        }
    }
}
