import java.util.*;

public class Main{

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

    int n = Integer.parseInt(sc.next());

    System.out.println((n+1)/2);
  }
} import java.util.*; util.* java public class Main{

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

    int n = Integer.parseInt(sc.next());

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

    int n = Integer.parseInt(sc.next());

    System.out.println((n+1)/2);
  } main {
    Scanner sc = new Scanner(System.in);

    int n = Integer.parseInt(sc.next());

    System.out.println((n+1)/2);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = Integer.parseInt(sc.next()); n Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc System.out.println((n+1)/2) System.out.println System.out System System.out (n+1)/2 (n+1) n 1 2 String[] args args public class Main{

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

    int n = Integer.parseInt(sc.next());

    System.out.println((n+1)/2);
  }
} public class Main{

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

    int n = Integer.parseInt(sc.next());

    System.out.println((n+1)/2);
  }
} Main
import java.util.*;

public class Main{

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

    int n = Integer.parseInt(sc.next());

    System.out.println((n+1)/2);
  }
}
