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;
		
    for(int i = 1; i <= N; i++) {
      int count = 0;
      int temp = i;
			
      while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      }
      if(count > max) {
        max = 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 max = 0;
    int ans = 1;
		
    for(int i = 1; i <= N; i++) {
      int count = 0;
      int temp = i;
			
      while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      }
      if(count > max) {
        max = 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 max = 0;
    int ans = 1;
		
    for(int i = 1; i <= N; i++) {
      int count = 0;
      int temp = i;
			
      while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      }
      if(count > max) {
        max = count;
        ans = i;
      }
    }
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);     
    int N = sc.nextInt();
    int max = 0;
    int ans = 1;
		
    for(int i = 1; i <= N; i++) {
      int count = 0;
      int temp = i;
			
      while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      }
      if(count > max) {
        max = 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 max = 0; max 0 int ans = 1; ans 1 for(int i = 1; i <= N; i++) {
      int count = 0;
      int temp = i;
			
      while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      }
      if(count > max) {
        max = count;
        ans = i;
      }
    } int i = 1; int i = 1; i 1 i <= N i N i++ i++ i {
      int count = 0;
      int temp = i;
			
      while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      }
      if(count > max) {
        max = count;
        ans = i;
      }
    } {
      int count = 0;
      int temp = i;
			
      while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      }
      if(count > max) {
        max = count;
        ans = i;
      }
    } int count = 0; count 0 int temp = i; temp i while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      } true {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      } if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        } temp%2 == 0 temp%2 temp 2 0 {
          temp = temp/2;
          count++;
        } temp = temp/2 temp temp/2 temp 2 count++ count {
          break;
        } break; if(count > max) {
        max = count;
        ans = i;
      } count > max count max {
        max = count;
        ans = i;
      } max = count max 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 max = 0;
    int ans = 1;
		
    for(int i = 1; i <= N; i++) {
      int count = 0;
      int temp = i;
			
      while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      }
      if(count > max) {
        max = 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 max = 0;
    int ans = 1;
		
    for(int i = 1; i <= N; i++) {
      int count = 0;
      int temp = i;
			
      while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      }
      if(count > max) {
        max = 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 max = 0;
    int ans = 1;
		
    for(int i = 1; i <= N; i++) {
      int count = 0;
      int temp = i;
			
      while(true) {
        if(temp%2 == 0) {
          temp = temp/2;
          count++;
        }else {
          break;
        }
      }
      if(count > max) {
        max = count;
        ans = i;
      }
    }
    System.out.println(ans);
  }
}