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 C# (judge verdict: Accepted)

using System;
using System.Collections.Generic;

class alds14a
{
    static void Main()
    {
        Console.ReadLine();
        List<int> S = read();
        Console.ReadLine();
        List<int> T = read();
        int ct = 0;
        foreach (int tgt in T)
        {
            if (S.BinarySearch(tgt)>-1) ct++;
        }
        Console.WriteLine(ct);
    }
    static List<int> read()
    {
        List<int> ret = new List<int>();
        string[] input = Console.ReadLine().Split(' ');
        foreach (string data in input)
        {
            int num;
            if (int.TryParse(data, out num))
            {
                ret.Add(num);
            }
        }
        return ret;
    }
}