PAT 1072 开学寄语 （20 分）

#include<iostream>
#include<string>
#include<map>
using namespace std;
int main() {
    map<string, int> map;       //用于判断是否属于查缴物品
    string str, name, th[6];        //th存放查缴物品编号
    int count;              //查缴物品计数器
    int n, m, k;
    int people = 0, sum = 0;
    cin >> n >> m;//学生人数 物品种类数
    for (int i = 0; i < m; i++) {
        cin >> str;//需要被查缴的物品编号 2333 6666
        map[str]++;
    }
    for (int i = 0; i < n; i++) {
        cin >> name >> k;//个人物品数量
        count = 0;
        for (int j = 0; j < k; j++) {
            cin >> str;
            if (map[str] > 0) {
                th[count++] = str;
                sum++;
            }
        }
        if (count) {
            cout << name << ":";
            for (int l = 0; l < count; l++)
                cout <<" "<< th[l];
            cout << endl;
            people++;
        }
    }
    cout << people << " " << sum;
    return 0;
}