实用指南：1039 Course List for Student

Zhejiang University has 40000 students and provides 2500 courses. Now given the student name lists of all the courses, you are supposed to output the registered course list for each student who comes for a query.

Input Specification:

Each input file contains one test case. For each case, the first line contains 2 positive integers: N (≤40,000), the number of students who look for their course lists, and K (≤2,500), the total number of courses. Then the student name lists are given for the courses (numbered from 1 to K) in the following format: for each course i, first the course index i and the number of registered students Ni​ (≤200) are given in a line. Then in the next line, Ni​ student names are given. A student name consists of 3 capital English letters plus a one-digit number. Finally the last line contains the N names of students who come for a query. All the names and numbers in a line are separated by a space.

Output Specification:

For each test case, print your results in N lines. Each line corresponds to one student, in the following format: first print the student's name, then the total number of registered courses of that student, and finally the indices of the courses in increasing order. The query results must be printed in the same order as input. All the data in a line must be separated by a space, with no extra space at the end of the line.

Sample Input:

11 54 7BOB5 DON2 FRA8 JAY9 KAT3 LOR6 ZOE11 4ANN0 BOB5 JAY9 LOR62 7ANN0 BOB5 FRA8 JAY9 JOE4 KAT3 LOR63 1BOB55 9AMY7 ANN0 BOB5 DON2 FRA8 JAY9 KAT3 LOR6 ZOE1ZOE1 ANN0 BOB5 JOE4 JAY9 FRA8 DON2 AMY7 KAT3 LOR6 NON9

Sample Output:

ZOE1 2 4 5ANN0 3 1 2 5BOB5 5 1 2 3 4 5JOE4 1 2JAY9 4 1 2 4 5FRA8 3 2 4 5DON2 2 4 5AMY7 1 5KAT3 3 2 4 5LOR6 4 1 2 4 5NON9 0

 题目大意：有 N 个学生，K 门课，给出选择每门课的学生姓名，最后对于给出的N个学生的姓名的选课情况进行查询，按查询顺序输出每个学生的选课情况。
分析：用 map 建立名字和存储下标的映射，用 vector 记录学生的选课情况，最后输出即可。

#include#include #include  #include  #include   #include   #include   #include    #include    #include    #include    #include      #include      #define INF 0x3fffffff#define db1(x) coutret[400010];mapmp; int main(void){    #ifdef test    freopen("in.txt","r",stdin);//    freopen("out.txt","w",stdout);    clock_t start=clock();    #endif //test     int n,k,t=1;scanf("%d%d",&n,&k);    for(int i=0;i>ss;            if(!mp[ss])mp[ss]=t,ret[t].push_back(index),t++;            else ret[mp[ss]].push_back(index);        }    }    for(int i=0;i>q;        int pos=mp[q];        if(!pos)cout<