import java.util.*;
import java.io.*;

public class j {
  Scanner in = new Scanner(System.in);
  // static Scanner in = null;

  public static void main(String[] args) {
    // ////erase for real
    // try{
    //   File file = new File("input.txt");
    //   in = new Scanner(file);
    // } catch(FileNotFoundException e) {
    //   System.out.println("exception");
    // }
    // ////

    new j().go();
  }

  private void go() {
    int n = in.nextInt();

    Map<String, Integer> dom = new HashMap<String, Integer>();
    for (int i = 0; i < n; i++) {
      String key = in.next();
      if(dom.containsKey(key)) {
        int val = dom.get(key) + 1;
        dom.put(key, val);
      }
      else {
        dom.put(key, 1);
      }
    }

    Map<String, Integer> kattis = new HashMap<String, Integer>();
    for (int i = 0; i < n; i++) {
      String key = in.next();
      if(kattis.containsKey(key)) {
        int val = kattis.get(key) + 1;
        kattis.put(key, val);
      }
      else {
        kattis.put(key, 1);
      }
    }

    int result = 0;

    for (String key : dom.keySet()) {
      if(kattis.containsKey(key)) {
        if(dom.get(key) < kattis.get(key)) {
          result = result + dom.get(key);
        }
        else {
          result = result + kattis.get(key);
        }
      }
    }
    System.out.println(result);
  }
}