1047. Student List for Course (25)

1047. Student List for Course (25)

#include <stdio.h>#include <string.h>#include <stdlib.h>struct list{    char student[1000][5];    int top;}s[2501];int comp(const void*a,const void*b){    return strcmp((char*)a,(char*)b);}int main(){    int n,k;    scanf("%d %d",&n,&k);    while(n--)    {        char name[5];        int i,ans=0,len;        scanf("%s %d",name,&len);        for(i=0;i<len;i++)        {            scanf("%d",&ans);            strcpy(s[ans].student[s[ans].top++],name);        }    }    int i;    for(i=1;i<=k;i++)    {        printf("%d %d\n",i,s[i].top);        qsort(s[i].student,s[i].top,sizeof(s[i].student[0]),comp);        int j;        for(j=0;j<s[i].top;j++)            printf("%s\n",s[i].student[j]);    }    return 0;}