import java.util.Scanner;

public class Main {

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

} import java.util.Scanner; Scanner java.util public class Main {

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

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

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

} public class Main {

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

} Main
import java.util.Scanner;

public class Main {

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

}