import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		System.out.println(n / 2 + n % 2);
		scan.close();
	}

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

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		System.out.println(n / 2 + n % 2);
		scan.close();
	}

} Main public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		System.out.println(n / 2 + n % 2);
		scan.close();
	} main {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		System.out.println(n / 2 + n % 2);
		scan.close();
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int n = scan.nextInt(); n scan.nextInt() scan.nextInt scan System.out.println(n / 2 + n % 2) System.out.println System.out System System.out n / 2 + n % 2 n / 2 n 2 n % 2 n 2 scan.close() scan.close scan String[] args args public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		System.out.println(n / 2 + n % 2);
		scan.close();
	}

} public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		System.out.println(n / 2 + n % 2);
		scan.close();
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		System.out.println(n / 2 + n % 2);
		scan.close();
	}

}
