import java.util.*;
import java.io.*; 

public class Main {
	
	public static void main(String... string) {
		Scanner sc = new Scanner(System.in); 
		int n = sc.nextInt(); 
		System.out.println(n/2 + n%2); 
	}
} import java.util.*; util.* java import java.io.*; io.* java public class Main {
	
	public static void main(String... string) {
		Scanner sc = new Scanner(System.in); 
		int n = sc.nextInt(); 
		System.out.println(n/2 + n%2); 
	}
} Main public static void main(String... string) {
		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... string string public class Main {
	
	public static void main(String... string) {
		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... string) {
		Scanner sc = new Scanner(System.in); 
		int n = sc.nextInt(); 
		System.out.println(n/2 + n%2); 
	}
} Main
import java.util.*;
import java.io.*; 

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