import java.util.Scanner;

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

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