import java.util.Scanner;

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

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