import java.util.*;
public class Main
{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);

int l =sc.nextInt();

System.out.println(l/2+(l%2));
}

} import java.util.*; util.* java public class Main
{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);

int l =sc.nextInt();

System.out.println(l/2+(l%2));
}

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

int l =sc.nextInt();

System.out.println(l/2+(l%2));
} main {
Scanner sc=new Scanner(System.in);

int l =sc.nextInt();

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

int l =sc.nextInt();

System.out.println(l/2+(l%2));
}

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

int l =sc.nextInt();

System.out.println(l/2+(l%2));
}

} Main
import java.util.*;
public class Main
{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);

int l =sc.nextInt();

System.out.println(l/2+(l%2));
}

}