1039 Course List for Student 25

#include <cstdio>
#include <vector>
#include <algorithm>
using namespace std;
const int range = 26*26*26*10 + 5;
vector<int> Stu[range];

int getId(char s[]){
    int res = 0;
    for(int i = 0; i < 3; i++){
        res = res * 26 + (s[i] -'A');
    }
    res = res * 10 + s[3] - '0';
    return res;
}

int main() {
    char name[5];
    int N,M;
    scanf("%d%d", &N, &M);
    for(int i = 0; i < M; i++){
        int classId, chooseNum;
        scanf("%d%d", &classId, &chooseNum);
        for(int j = 0; j < chooseNum; j++){
            scanf("%s", name);
            Stu[getId(name)].push_back(classId);
        }
    }
    for(int i = 0; i < N; i++){
        scanf("%s", name);
        int id = getId(name);
        sort(Stu[id].begin(), Stu[id].end());
        printf("%s %d", name, Stu[id].size());
        for(int j = 0; j < Stu[id].size(); j++){
            printf(" %d", Stu[id][j]);
        }
        printf("\n");
    }
    return 0;
}