import java.io.*;

public class Main {
  public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    
    int n = Integer.parseInt(br.readLine());
    System.out.println(n/2 + n%2);
  }
} import java.io.*; io.* java public class Main {
  public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    
    int n = Integer.parseInt(br.readLine());
    System.out.println(n/2 + n%2);
  }
} Main public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    
    int n = Integer.parseInt(br.readLine());
    System.out.println(n/2 + n%2);
  } main {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    
    int n = Integer.parseInt(br.readLine());
    System.out.println(n/2 + n%2);
  } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) int n = Integer.parseInt(br.readLine()); n Integer.parseInt(br.readLine()) Integer.parseInt Integer br.readLine() br.readLine br System.out.println(n/2 + n%2) System.out.println System.out System System.out n/2 + n%2 n/2 n 2 n%2 n 2 String[] args args public class Main {
  public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    
    int n = Integer.parseInt(br.readLine());
    System.out.println(n/2 + n%2);
  }
} public class Main {
  public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    
    int n = Integer.parseInt(br.readLine());
    System.out.println(n/2 + n%2);
  }
} Main
import java.io.*;

public class Main {
  public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    
    int n = Integer.parseInt(br.readLine());
    System.out.println(n/2 + n%2);
  }
}
