import java.util.Scanner;

public class Main {

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

} 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();
		int result = 0;
		if(n%2!=0) {
			result = (n/2)+1;
		}else {
			result = n/2;
		}
		System.out.println(result);
	}

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

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

} public class Main {

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

} Main
import java.util.Scanner;

public class Main {

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

}
