import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double n = sc.nextDouble();
        System.out.println(Math.round(n / 2));
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double n = sc.nextDouble();
        System.out.println(Math.round(n / 2));
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double n = sc.nextDouble();
        System.out.println(Math.round(n / 2));
    } main {
        Scanner sc = new Scanner(System.in);
        double n = sc.nextDouble();
        System.out.println(Math.round(n / 2));
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) double n = sc.nextDouble(); n sc.nextDouble() sc.nextDouble sc System.out.println(Math.round(n / 2)) System.out.println System.out System System.out Math.round(n / 2) Math.round Math n / 2 n 2 String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double n = sc.nextDouble();
        System.out.println(Math.round(n / 2));
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double n = sc.nextDouble();
        System.out.println(Math.round(n / 2));
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double n = sc.nextDouble();
        System.out.println(Math.round(n / 2));
    }
}
