import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    long N = scan.nextInt();
    scan.close();

    System.out.println(N/2 + N%2);
  }
} import java.util.Scanner; Scanner java.util public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    long N = scan.nextInt();
    scan.close();

    System.out.println(N/2 + N%2);
  }
} Main public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    long N = scan.nextInt();
    scan.close();

    System.out.println(N/2 + N%2);
  } main {
    Scanner scan = new Scanner(System.in);
    long N = scan.nextInt();
    scan.close();

    System.out.println(N/2 + N%2);
  } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) long N = scan.nextInt(); N scan.nextInt() scan.nextInt scan scan.close() scan.close scan System.out.println(N/2 + N%2) System.out.println System.out System System.out N/2 + N%2 N/2 N 2 N%2 N 2 String[] args args public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    long N = scan.nextInt();
    scan.close();

    System.out.println(N/2 + N%2);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    long N = scan.nextInt();
    scan.close();

    System.out.println(N/2 + N%2);
  }
} Main
import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    long N = scan.nextInt();
    scan.close();

    System.out.println(N/2 + N%2);
  }
}