PAT A1039

AC代码：

#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
using namespace std;

const int M = 26*26*26*10+1;
vector<int> student[M];

int hanshu(char name[])
{
    int id=0;
    for(int i=0;i<3;i++){
        id=id*26+(name[i]-'A');
    }
    id=id*10+(name[3]-'0');
    
    return id;
}

int main(void)
{
    freopen("in.txt","r",stdin);
    
    int n,k;     //student's number , course's number
    char sname[5];     //student's name
    scanf("%d%d",&n,&k);
    
    for(int i=0;i<k;i++){
        int course,stn;
        
        scanf("%d%d",&course,&stn);
    
        for(int j=0;j<stn;j++){
            scanf("%s",sname);
            int id=hanshu(sname);
            student[id].push_back(course);
        }
    }
    
    for(int i=0;i<n;i++){
        scanf("%s",sname);
        int id=hanshu(sname);
        sort(student[id].begin(),student[id].end());
        printf("%s %d",sname,student[id].size());
        
        for(int j=0;j<student[id].size();j++){
            printf(" %d",student[id][j]);
        }
        printf("\n");
    }
    
    
    fclose(stdin);
    return 0;
}