import java.util.*;

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