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 JAVA (judge verdict: Wrong Answer)

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

class Main{
	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int n = Integer.parseInt(br.readLine());
		Deque<Integer> stack = new ArrayDeque<Integer>();
		String[] str = (br.readLine()).split(" ");
		int count = 0;
		for (int i = 0 ; i<n ; i++ ) {
			stack.addFirst(Integer.parseInt(str[i]));
		}
		int q = Integer.parseInt(br.readLine());
		String[] line4 = (br.readLine()).split(" ");
		int[] num = new int[q];
		for (int i = 0; i<q ; i++ ) {
			num[i] = Integer.parseInt(line4[i]);
		}
		for ( int i = 0; i<q ; i++ ) {
			int a = num[i];
			while(stack.remove(a)){
				count++;
			}
		}
		System.out.println(count);
	}
}