1 #include <iostream> 2 #include <set> 3 #include <string> 4 using namespace std; 5  6 int main() { 7     int n, m; 8     while (cin >> n && n) { 9         cin >> m;10         set<string> v;11         for (int i = 0; i < n; i++) {12             string temp;13             cin >> temp;14             for (int j = 0; j < temp.size(); j++) {  //全部转化为小写 15                 temp[j] = tolower(temp[j]);16             }17             v.insert(temp);18         }19         for (int i = 0; i < m; i++) {20             string temp;21             cin >> temp;22             for (int j = 0; j < temp.size(); j++) {23                 temp[j] = tolower(temp[j]);24             }25             if (v.count(temp))26                 v.erase(temp); 27         }28         cout << v.size() << endl;29     }30     31     return 0;32 }