import java.util.Scanner;

public class Main {

    static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) throws Exception {
        int N = sc.nextInt();

        System.out.println((N + 1) / 2);
    }

} import java.util.Scanner; Scanner java.util public class Main {

    static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) throws Exception {
        int N = sc.nextInt();

        System.out.println((N + 1) / 2);
    }

} Main static Scanner sc = new Scanner(System.in); sc new Scanner(System.in) public static void main(String[] args) throws Exception {
        int N = sc.nextInt();

        System.out.println((N + 1) / 2);
    } main {
        int N = sc.nextInt();

        System.out.println((N + 1) / 2);
    } int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc System.out.println((N + 1) / 2) System.out.println System.out System System.out (N + 1) / 2 (N + 1) N 1 2 String[] args args public class Main {

    static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) throws Exception {
        int N = sc.nextInt();

        System.out.println((N + 1) / 2);
    }

} public class Main {

    static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) throws Exception {
        int N = sc.nextInt();

        System.out.println((N + 1) / 2);
    }

} Main
import java.util.Scanner;

public class Main {

    static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) throws Exception {
        int N = sc.nextInt();

        System.out.println((N + 1) / 2);
    }

}
