You are given a sequence of n integers S and a sequence of different q integers T. Write a program which outputs C, the number of integers in T which are also in the set S.

Notes

Constraints

* Elements in S is sorted in ascending order
* n ≤ 100000
* q ≤ 50000
* 0 ≤ an element in S ≤ 109
* 0 ≤ an element in T ≤ 109

Input

In the first line n is given. In the second line, n integers are given. In the third line q is given. Then, in the fourth line, q integers are given.

Output

Print C in a line.

Examples

Input

5
1 2 3 4 5
3
3 4 1


Output

3


Input

3
1 2 3
1
5


Output

0


Input

5
1 1 2 2 3
2
1 2


Output

2
import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int[] s = new int[n];
    for(int i = 0; i < n; i++) {
      s[i] = sc.nextInt();
    }
    int q = sc.nextInt();
    List<Integer> t = new ArrayList<>();
    for(int i = 0; i < q; i++) {
      int a = sc.nextInt();
      if(!t.contains(a)) {
        t.add(a);
      }
    }
    int count = 0;
    loop: for(int i = 0; i < t.size(); i++) {
      int key = t.get(i);
      int left = 0;
      int right = n - 1;
      int middle = n / 2;
      while(key != s[middle]) {
        if(key < s[middle]) {
          right = middle - 1;
          middle = (left + right) / 2;
        } else {
          left = middle + 1;
          middle = (left + right) / 2;
        }
        if(left > right) {
          continue loop;
        }
      }
      count++;
    }
    System.out.println(count);
  }
}

