import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        new Main().run();
    }

    private void run() {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();

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

} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        new Main().run();
    }

    private void run() {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();

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

} Main public static void main(String[] args) {
        new Main().run();
    } main {
        new Main().run();
    } new Main().run() new Main().run new Main() String[] args args private void run() {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();

        System.out.println((N/2)+(N%2));
    } run {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();

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

    private void run() {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();

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

} public class Main {
    public static void main(String[] args) {
        new Main().run();
    }

    private void run() {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();

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

} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        new Main().run();
    }

    private void run() {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();

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

}