import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int maxCount = 0;
    int ans = 1;
    for (int i = 1; i <= N; i++) {
      int count = 0;
      int n = i;
      while (n % 2 == 0) {
        n /= 2;
        count++;
      }
      if (maxCount < count) {
        maxCount = count;
        ans = i;
      }
    }
    System.out.println(ans);
  }
} import java.util.*; util.* java public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int maxCount = 0;
    int ans = 1;
    for (int i = 1; i <= N; i++) {
      int count = 0;
      int n = i;
      while (n % 2 == 0) {
        n /= 2;
        count++;
      }
      if (maxCount < count) {
        maxCount = count;
        ans = i;
      }
    }
    System.out.println(ans);
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int maxCount = 0;
    int ans = 1;
    for (int i = 1; i <= N; i++) {
      int count = 0;
      int n = i;
      while (n % 2 == 0) {
        n /= 2;
        count++;
      }
      if (maxCount < count) {
        maxCount = count;
        ans = i;
      }
    }
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int maxCount = 0;
    int ans = 1;
    for (int i = 1; i <= N; i++) {
      int count = 0;
      int n = i;
      while (n % 2 == 0) {
        n /= 2;
        count++;
      }
      if (maxCount < count) {
        maxCount = count;
        ans = i;
      }
    }
    System.out.println(ans);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int maxCount = 0; maxCount 0 int ans = 1; ans 1 for (int i = 1; i <= N; i++) {
      int count = 0;
      int n = i;
      while (n % 2 == 0) {
        n /= 2;
        count++;
      }
      if (maxCount < count) {
        maxCount = count;
        ans = i;
      }
    } int i = 1; int i = 1; i 1 i <= N i N i++ i++ i {
      int count = 0;
      int n = i;
      while (n % 2 == 0) {
        n /= 2;
        count++;
      }
      if (maxCount < count) {
        maxCount = count;
        ans = i;
      }
    } {
      int count = 0;
      int n = i;
      while (n % 2 == 0) {
        n /= 2;
        count++;
      }
      if (maxCount < count) {
        maxCount = count;
        ans = i;
      }
    } int count = 0; count 0 int n = i; n i while (n % 2 == 0) {
        n /= 2;
        count++;
      } n % 2 == 0 n % 2 n 2 0 {
        n /= 2;
        count++;
      } n /= 2 n 2 count++ count if (maxCount < count) {
        maxCount = count;
        ans = i;
      } maxCount < count maxCount count {
        maxCount = count;
        ans = i;
      } maxCount = count maxCount count ans = i ans i System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int maxCount = 0;
    int ans = 1;
    for (int i = 1; i <= N; i++) {
      int count = 0;
      int n = i;
      while (n % 2 == 0) {
        n /= 2;
        count++;
      }
      if (maxCount < count) {
        maxCount = count;
        ans = i;
      }
    }
    System.out.println(ans);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int maxCount = 0;
    int ans = 1;
    for (int i = 1; i <= N; i++) {
      int count = 0;
      int n = i;
      while (n % 2 == 0) {
        n /= 2;
        count++;
      }
      if (maxCount < count) {
        maxCount = count;
        ans = i;
      }
    }
    System.out.println(ans);
  }
} Main
import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int maxCount = 0;
    int ans = 1;
    for (int i = 1; i <= N; i++) {
      int count = 0;
      int n = i;
      while (n % 2 == 0) {
        n /= 2;
        count++;
      }
      if (maxCount < count) {
        maxCount = count;
        ans = i;
      }
    }
    System.out.println(ans);
  }
}