import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Double N = sc.nextDouble();

        int ans = (int) Math.ceil(N/2);

        System.out.println(ans);


    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Double N = sc.nextDouble();

        int ans = (int) Math.ceil(N/2);

        System.out.println(ans);


    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Double N = sc.nextDouble();

        int ans = (int) Math.ceil(N/2);

        System.out.println(ans);


    } main {
        Scanner sc = new Scanner(System.in);
        Double N = sc.nextDouble();

        int ans = (int) Math.ceil(N/2);

        System.out.println(ans);


    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) Double N = sc.nextDouble(); N sc.nextDouble() sc.nextDouble sc int ans = (int) Math.ceil(N/2); ans (int) Math.ceil(N/2) Math.ceil Math N/2 N 2 System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Double N = sc.nextDouble();

        int ans = (int) Math.ceil(N/2);

        System.out.println(ans);


    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Double N = sc.nextDouble();

        int ans = (int) Math.ceil(N/2);

        System.out.println(ans);


    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Double N = sc.nextDouble();

        int ans = (int) Math.ceil(N/2);

        System.out.println(ans);


    }
}
