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

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