#include <bits/stdc++.h>
using namespace std;
map<string, int> mp1, mp2;
int main() {
  int n;
  cin >> n;
  for (int i = 0; i < n; i++) {
    string s;
    cin >> s;
    mp1[s] += 1;
  }
  int m;
  cin >> m;
  for (int i = 0; i < n; i++) {
    string s;
    cin >> s;
    mp2[s] += 1;
  }
  map<string, int>::iterator it;
  int mx = -1000;
  for (it = mp1.begin(); it != mp1.end(); it++) {
    mx = max(mx, mp1[it->first] - mp2[it->first]);
  }
  cout << mx << endl;
  return 0;
}
