Problem:
Search II

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

Elements in S is sorted in ascending order

n ≤ 100000

q ≤ 50000

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
1 2 3
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.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayDeque;

class Main {

	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		ArrayDeque<String> queue = new ArrayDeque<String>();
		int count = 0;

		int n = Integer.parseInt(br.readLine());
		String str[] = br.readLine().split(" ");
		for (int i = 0; i < n; i++) {
			queue.add(str[i]);
		}

		n = Integer.parseInt(br.readLine());
		String[] numList = br.readLine().split(" ");
		for (int i = 0; i < n; i++) {
			while (queue.contains(numList[i])) {
				queue.removeFirstOccurrence(numList[i]);
				count++;
				}
			}
		System.out.println(count);
	}
}