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