Problem:
Search I

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.

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.

Constraints

n ≤ 10000

q ≤ 500

0 ≤ an element in S ≤ 109

0 ≤ an element in T ≤ 109

Sample Input 1

5
1 2 3 4 5
3
3 4 1

Sample Output 1

3

Sample Input 2

3
3 1 2
1
5

Sample Output 2

0

Sample Input 3

5
1 1 2 2 3
2
1 2

Sample Output 3

2

Notes

Solution in Python3 (judge verdict: Accepted)

#! /usr/bin/env python
# -*- coding: utf-8 -*-

''' ?????¢??¢?´¢ '''

# n??????????´??????????????????????q????????¢?´¢????????£?????´???
# ?¨??????????O(qn)


def linear_search(S, T):
    count = 0
    for t in T:
        if t in S:
            count += 1
    return count

if __name__ == '__main__':
    NS = int(input())
    S = list(map(int, input().split()))
    NT = int(input())
    T = list(map(int, input().split()))

    print(linear_search(S, T))