import java.util.Scanner;

public class Main {
	static final long MOD = 1_000_000_007L;
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println(n / 2 + n % 2);
		
		sc.close();
	}

}



 import java.util.Scanner; Scanner java.util public class Main {
	static final long MOD = 1_000_000_007L;
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println(n / 2 + n % 2);
		
		sc.close();
	}

} Main static final long MOD = 1_000_000_007L; MOD 1_000_000_007L public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println(n / 2 + n % 2);
		
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println(n / 2 + n % 2);
		
		sc.close();
	} 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 sc.close() sc.close sc String[] args args public class Main {
	static final long MOD = 1_000_000_007L;
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println(n / 2 + n % 2);
		
		sc.close();
	}

} public class Main {
	static final long MOD = 1_000_000_007L;
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println(n / 2 + n % 2);
		
		sc.close();
	}

} Main
import java.util.Scanner;

public class Main {
	static final long MOD = 1_000_000_007L;
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		System.out.println(n / 2 + n % 2);
		
		sc.close();
	}

}




