import java.lang.reflect.Array;
import java.util.*;


public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        System.out.println(n/2+n%2);
    }

} import java.lang.reflect.Array; Array java.lang.reflect import java.util.*; util.* java public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        System.out.println(n/2+n%2);
    }

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

} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        System.out.println(n/2+n%2);
    }

} Main
import java.lang.reflect.Array;
import java.util.*;


public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        System.out.println(n/2+n%2);
    }

}
