import java.util.*;

class Main{
public static void main(String[] args ){
Scanner sc=new Scanner(System.in);
int N=sc.nextInt();

System.out.print((N+1)/2);
}
} import java.util.*; util.* java class Main{
public static void main(String[] args ){
Scanner sc=new Scanner(System.in);
int N=sc.nextInt();

System.out.print((N+1)/2);
}
} Main public static void main(String[] args ){
Scanner sc=new Scanner(System.in);
int N=sc.nextInt();

System.out.print((N+1)/2);
} main {
Scanner sc=new Scanner(System.in);
int N=sc.nextInt();

System.out.print((N+1)/2);
} Scanner sc=new Scanner(System.in); sc new Scanner(System.in) int N=sc.nextInt(); N sc.nextInt() sc.nextInt sc System.out.print((N+1)/2) System.out.print System.out System System.out (N+1)/2 (N+1) N 1 2 String[] args args
import java.util.*;

class Main{
public static void main(String[] args ){
Scanner sc=new Scanner(System.in);
int N=sc.nextInt();

System.out.print((N+1)/2);
}
}