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