#include <fstream>
#include <string>
#include <unordered_map>

using namespace std;

ifstream fin("dtcsu.in");
ofstream fout("dtcsu.out");

int Q, sol;
string s;

unordered_map <string, bool> ap;

int main()
{
    for(int i = 1; i <= 276997; i++)
        {
            fin >> s;
            ap[s] = 1;
        }

    fin >> Q;

    for(int i = 1; i <= Q; i++)
    {
        fin >> s;

        if(ap[s] == 1)
            sol++;
    }

    fout << sol;
}