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+1)/2);

	}

} 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+1)/2);

	}

} Main public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int N = scan.nextInt();

		System.out.println((N+1)/2);

	} main {

		Scanner scan = new Scanner(System.in);

		int N = scan.nextInt();

		System.out.println((N+1)/2);

	} 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+1)/2) System.out.println System.out System System.out (N+1)/2 (N+1) N 1 2 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+1)/2);

	}

} public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int N = scan.nextInt();

		System.out.println((N+1)/2);

	}

} 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+1)/2);

	}

}
