
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Main main = new Main();
		main.run();
	}

	public void run() {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		if(n%2==0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2+1);
		}
		sc.close();
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Main main = new Main();
		main.run();
	}

	public void run() {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		if(n%2==0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2+1);
		}
		sc.close();
	}
} Main public static void main(String[] args) {
		Main main = new Main();
		main.run();
	} main {
		Main main = new Main();
		main.run();
	} Main main = new Main(); main new Main() main.run() main.run main String[] args args public void run() {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		if(n%2==0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2+1);
		}
		sc.close();
	} run {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		if(n%2==0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2+1);
		}
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc if(n%2==0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2+1);
		} n%2==0 n%2 n 2 0 {
			System.out.println(n/2);
		} System.out.println(n/2) System.out.println System.out System System.out n/2 n 2 {
			System.out.println(n/2+1);
		} System.out.println(n/2+1) System.out.println System.out System System.out n/2+1 n/2 n 2 1 sc.close() sc.close sc public class Main {

	public static void main(String[] args) {
		Main main = new Main();
		main.run();
	}

	public void run() {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		if(n%2==0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2+1);
		}
		sc.close();
	}
} public class Main {

	public static void main(String[] args) {
		Main main = new Main();
		main.run();
	}

	public void run() {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		if(n%2==0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2+1);
		}
		sc.close();
	}
} Main

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Main main = new Main();
		main.run();
	}

	public void run() {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		if(n%2==0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2+1);
		}
		sc.close();
	}
}
