import java.util.*;


public class Main {
	public static void main (String[] args){
		Scanner sc =  new Scanner(System.in);
		float N = sc.nextInt();
		int R = (int)Math.ceil(N/2);
		System.out.println(R);
	}
} import java.util.*; util.* java public class Main {
	public static void main (String[] args){
		Scanner sc =  new Scanner(System.in);
		float N = sc.nextInt();
		int R = (int)Math.ceil(N/2);
		System.out.println(R);
	}
} Main public static void main (String[] args){
		Scanner sc =  new Scanner(System.in);
		float N = sc.nextInt();
		int R = (int)Math.ceil(N/2);
		System.out.println(R);
	} main {
		Scanner sc =  new Scanner(System.in);
		float N = sc.nextInt();
		int R = (int)Math.ceil(N/2);
		System.out.println(R);
	} Scanner sc =  new Scanner(System.in); sc new Scanner(System.in) float N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int R = (int)Math.ceil(N/2); R (int)Math.ceil(N/2) Math.ceil Math N/2 N 2 System.out.println(R) System.out.println System.out System System.out R String[] args args public class Main {
	public static void main (String[] args){
		Scanner sc =  new Scanner(System.in);
		float N = sc.nextInt();
		int R = (int)Math.ceil(N/2);
		System.out.println(R);
	}
} public class Main {
	public static void main (String[] args){
		Scanner sc =  new Scanner(System.in);
		float N = sc.nextInt();
		int R = (int)Math.ceil(N/2);
		System.out.println(R);
	}
} Main
import java.util.*;


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