#include <bits/stdc++.h>
using namespace std;
bool item_check(vector<string> item, string x) {
  int i;
  for (i = 0; i < item.size(); i++) {
    if (x == item.at(i)) {
      return 1;
      break;
    }
  }
  return 0;
}
int main() {
  int M, N, i, j;
  cin >> N;
  vector<string> s(N);
  for (i = 0; i < N; i++) {
    cin >> s.at(i);
  }
  cin >> M;
  vector<string> t(M);
  for (i = 0; i < M; i++) {
    cin >> t.at(i);
  }
  vector<int> score;
  string x;
  vector<string> item;
  for (i = 0; i < N; i++) {
    x = s.at(i);
    int count1 = 0;
    int count2 = 0;
    if (i != 0 && item_check(item, x)) continue;
    for (j = 0; j < N; i++) {
      if (x == s.at(j)) count1++;
    }
    for (j = 0; j < M; i++) {
      if (x == t.at(j)) count1--;
      if (count1 < 0) break;
    }
    score.push_back(count1);
  }
  int max_value = *max_element(score.begin(), score.end());
  cout << max_value << endl;
}
