import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        System.out.println(N % 2 == 0 ? N / 2 : N / 2 + 1);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        System.out.println(N % 2 == 0 ? N / 2 : N / 2 + 1);
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        System.out.println(N % 2 == 0 ? N / 2 : N / 2 + 1);
    } main {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        System.out.println(N % 2 == 0 ? N / 2 : N / 2 + 1);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = Integer.parseInt(sc.next()); N Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc System.out.println(N % 2 == 0 ? N / 2 : N / 2 + 1) System.out.println System.out System System.out N % 2 == 0 ? N / 2 : N / 2 + 1 N % 2 == 0 N % 2 N 2 0 N / 2 N 2 N / 2 + 1 N / 2 N 2 1 String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        System.out.println(N % 2 == 0 ? N / 2 : N / 2 + 1);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        System.out.println(N % 2 == 0 ? N / 2 : N / 2 + 1);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        System.out.println(N % 2 == 0 ? N / 2 : N / 2 + 1);
    }
}
