
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int n = scanner.nextInt();
    if(n % 2 == 0) {
      System.out.println(n/2);
    } else {
      System.out.println(n/2+1);
    }

  }

} import java.util.ArrayList; ArrayList java.util import java.util.List; List java.util import java.util.Scanner; Scanner java.util public class Main {

  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int n = scanner.nextInt();
    if(n % 2 == 0) {
      System.out.println(n/2);
    } else {
      System.out.println(n/2+1);
    }

  }

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

  } main {
    Scanner scanner = new Scanner(System.in);
    int n = scanner.nextInt();
    if(n % 2 == 0) {
      System.out.println(n/2);
    } else {
      System.out.println(n/2+1);
    }

  } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) int n = scanner.nextInt(); n scanner.nextInt() scanner.nextInt scanner if(n % 2 == 0) {
      System.out.println(n/2);
    } else {
      System.out.println(n/2+1);
    } n % 2 == 0 n % 2 n 2 0 {
      System.out.println(n/2);
    } System.out.println(n/2) System.out.println System.out System System.out n/2 n 2 {
      System.out.println(n/2+1);
    } System.out.println(n/2+1) System.out.println System.out System System.out n/2+1 n/2 n 2 1 String[] args args public class Main {

  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int n = scanner.nextInt();
    if(n % 2 == 0) {
      System.out.println(n/2);
    } else {
      System.out.println(n/2+1);
    }

  }

} public class Main {

  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int n = scanner.nextInt();
    if(n % 2 == 0) {
      System.out.println(n/2);
    } else {
      System.out.println(n/2+1);
    }

  }

} Main

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int n = scanner.nextInt();
    if(n % 2 == 0) {
      System.out.println(n/2);
    } else {
      System.out.println(n/2+1);
    }

  }

}
