import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        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.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        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) {
        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) {
        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) {
        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.Scanner;

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