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();
    n=(n%2==0)?n/2:(n+1)/2;
    System.out.println(n);
  }
} 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();
    n=(n%2==0)?n/2:(n+1)/2;
    System.out.println(n);
  }
} Main public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    int n=sc.nextInt();
    n=(n%2==0)?n/2:(n+1)/2;
    System.out.println(n);
  } main {
    Scanner sc=new Scanner(System.in);
    int n=sc.nextInt();
    n=(n%2==0)?n/2:(n+1)/2;
    System.out.println(n);
  } Scanner sc=new Scanner(System.in); sc new Scanner(System.in) int n=sc.nextInt(); n sc.nextInt() sc.nextInt sc n=(n%2==0)?n/2:(n+1)/2 n (n%2==0)?n/2:(n+1)/2 (n%2==0) n%2 n 2 0 n/2 n 2 (n+1)/2 (n+1) n 1 2 System.out.println(n) System.out.println System.out System System.out n String[] args args public class Main
{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    int n=sc.nextInt();
    n=(n%2==0)?n/2:(n+1)/2;
    System.out.println(n);
  }
} public class Main
{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    int n=sc.nextInt();
    n=(n%2==0)?n/2:(n+1)/2;
    System.out.println(n);
  }
} 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();
    n=(n%2==0)?n/2:(n+1)/2;
    System.out.println(n);
  }
}