import java.util.Scanner;

 
public class Main {
 
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		double N = sc.nextDouble();
		System.out.println(String.format("%.0f", Math.ceil(N / 2)));
		
		sc.close();
	}
	
} import java.util.Scanner; Scanner java.util public class Main {
 
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		double N = sc.nextDouble();
		System.out.println(String.format("%.0f", Math.ceil(N / 2)));
		
		sc.close();
	}
	
} Main public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		double N = sc.nextDouble();
		System.out.println(String.format("%.0f", Math.ceil(N / 2)));
		
		sc.close();
	} main {
		
		Scanner sc = new Scanner(System.in);
		double N = sc.nextDouble();
		System.out.println(String.format("%.0f", Math.ceil(N / 2)));
		
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) double N = sc.nextDouble(); N sc.nextDouble() sc.nextDouble sc System.out.println(String.format("%.0f", Math.ceil(N / 2))) System.out.println System.out System System.out String.format("%.0f", Math.ceil(N / 2)) String.format String "%.0f" Math.ceil(N / 2) Math.ceil Math N / 2 N 2 sc.close() sc.close sc String[] args args public class Main {
 
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		double N = sc.nextDouble();
		System.out.println(String.format("%.0f", Math.ceil(N / 2)));
		
		sc.close();
	}
	
} public class Main {
 
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		double N = sc.nextDouble();
		System.out.println(String.format("%.0f", Math.ceil(N / 2)));
		
		sc.close();
	}
	
} Main
import java.util.Scanner;

 
public class Main {
 
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		double N = sc.nextDouble();
		System.out.println(String.format("%.0f", Math.ceil(N / 2)));
		
		sc.close();
	}
	
}