#include <bits/stdc++.h>
 
using namespace std;
 
ifstream in("dtcsu.in");
ofstream out("dtcsu.out");

int main() {
    ios::sync_with_stdio(false); in.tie(0); out.tie(0);
    
    string line;
    unordered_map< string, bool > uMep;
    for(int i = 1; i <= 276997; ++i) {
        getline(in, line);
        uMep[line] = true;
    }

    int m; in >> m;

    long long ans = 0;
    for(int i = 1; i <= m; ++i) {
        getline(in, line);
        ans += (uMep[line] == true);
    }

    out << ans << "\n";

    in.close(); out.close();
 
    return 0;
}