online_judge_1196

#include <stdio.h>#include <stdlib.h>typedef struct Stu{    int hao;    int grade;}Stu;int cmp(const void *a,const void *b){    if(((Stu *)a)->grade!=((Stu *)b)->grade)        return ((Stu *)a)->grade - ((Stu *)b)->grade;    else        return ((Stu *)a)->hao - ((Stu *)b)->hao;}int main(){    int i,n;    Stu *s;    while(~scanf("%d",&n))    {        if(n<1||n>100) continue;        s=(Stu *)malloc(n*sizeof(Stu));        for(i=0;i<n;i++)            scanf("%d%d",&s[i].hao,&s[i].grade);        qsort(s,n,sizeof(Stu),cmp);        for(i=0;i<n;i++)            printf("%d %d\n",s[i].hao,s[i].grade);        free(s);    }    return 0;}