题目链接：

题解：

1 #include 
     
       2 #include
      
        3 using namespace std; 4  5 int main() { 6     int n, m; 7     cin >> n >> m; 8     int sum_row = 0, sum = 0; 9     string *need_find = new string[m];10     for (int i = 0; i < m; i++)11         cin >> need_find[i];12     for (int i = 0; i < n; i++) {13         string name;14         int num;15         cin >> name >> num;16         string *flag_find = new string[num];17         for (int i = 0; i < num; i++)18             cin >> flag_find[i];19         bool flag = false;20         string *ans = new string[num];21         int k = 0;22         for (int i = 0; i < num; i++) {23             for (int j = 0; j < m; j++) {24                 if (flag_find[i] == need_find[j]) {25                     flag = true;26                     ans[k++] = flag_find[i];27                     sum++;28                 }29             }30         }31         if (flag) {32             cout << name << ":";33             sum_row++;34             for (int i = 0; i < k; i++) {35                 cout << " " << ans[i];//此处格式的控制容易错（行末不得有多余空格）36             }37             cout << endl;38         }39     }40     cout << sum_row << " " << sum << endl;41     return 0;42 }