PAT:1047. Student List for Course (25) AC

#include<stdio.h>
#include<string.h>
#include<vector>
#include<algorithm>
using namespace std;
const int MAX=40010;

int n,k;          //n个人,k门课
char name[MAX][5];      //存n个人的名字

vector<int> course[MAX];    //记录每个课程选的学生

bool cmp(int a,int b)
{
  return strcmp(name[a],name[b])<0;  //按字典序排序
}
int main()
{
  scanf("%d%d",&n,&k);
  for(int i=1 ; i<=n ; ++i)
  {
    scanf("%s",name[i]);
    int k=0;
    scanf("%d",&k);
    for(int j=1 ; j<=k ; ++j)
    {
      int c;
      scanf("%d",&c);
      course[c].push_back(i);
    }

  }
  for(int i=1 ; i<=k ; ++i)
  {
    printf("%d %d\n",i,course[i].size());
    sort(course[i].begin(),course[i].end(),cmp);
    for(int j=0 ; j<course[i].size() ; ++j)
      printf("%s\n",name[course[i][j]]);
  }
  return 0;
}
posted on 2015-03-10 18:34  Evence  阅读(130)  评论(0编辑  收藏  举报