import java.util.Scanner;
public class Main{
  public static void main (String [] args){
    Scanner sc = new Scanner (System.in);
    int n = sc.nextInt(),x;
    if (n%2==0) x=n/2;
    else x=n/2+1;
    System.out.println(x);
    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(),x;
    if (n%2==0) x=n/2;
    else x=n/2+1;
    System.out.println(x);
    sc.close();
  }
} Main public static void main (String [] args){
    Scanner sc = new Scanner (System.in);
    int n = sc.nextInt(),x;
    if (n%2==0) x=n/2;
    else x=n/2+1;
    System.out.println(x);
    sc.close();
  } main {
    Scanner sc = new Scanner (System.in);
    int n = sc.nextInt(),x;
    if (n%2==0) x=n/2;
    else x=n/2+1;
    System.out.println(x);
    sc.close();
  } Scanner sc = new Scanner (System.in); sc new Scanner (System.in) int n = sc.nextInt() n sc.nextInt() sc.nextInt sc x; x if (n%2==0) x=n/2;
    else x=n/2+1; n%2==0 n%2 n 2 0 x=n/2 x n/2 n 2 x=n/2+1 x n/2+1 n/2 n 2 1 System.out.println(x) System.out.println System.out System System.out x 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(),x;
    if (n%2==0) x=n/2;
    else x=n/2+1;
    System.out.println(x);
    sc.close();
  }
} public class Main{
  public static void main (String [] args){
    Scanner sc = new Scanner (System.in);
    int n = sc.nextInt(),x;
    if (n%2==0) x=n/2;
    else x=n/2+1;
    System.out.println(x);
    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(),x;
    if (n%2==0) x=n/2;
    else x=n/2+1;
    System.out.println(x);
    sc.close();
  }
}