import java.util.Scanner;

public class MultipleChoice {

  public static void main(String[] args) {
   Scanner s= new Scanner(System.in);

   int testLength= s.nextInt();
   String[] studentAns= new String[testLength];
   String[] correctAns= new String[testLength];
   int mark=0;

   s.nextLine();
   for(int i=0;i<testLength; i++){
     studentAns[i]= s.nextLine();
   }

   for(int i=0;i<testLength; i++){
      correctAns[i]= s.nextLine();
   }

   for(int i=0;i<testLength;i++){
    if(studentAns[i].equals(correctAns[i]))
     mark++;
   }
   System.out.println(mark);
  }
}