int main() { int n, M; string s; while (cin >> n) { map<string, int>m; for (int i = 0; i < n; i++) { cin >> s; m[s] = 0; } cin >> M; for (int i = 0; i < M; i++) { cin >> s; if (m.find(s) != m.end()) { if (m[s] == 0) { ...