import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println((int)Math.ceil((double)n/2));
	}

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

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println((int)Math.ceil((double)n/2));
	}

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

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println((int)Math.ceil((double)n/2));
	}

} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println((int)Math.ceil((double)n/2));
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println((int)Math.ceil((double)n/2));
	}

}