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