#include
#include
#include?

#define?MAXID?6
#define?MAXNAME?8
#define?MAXN?100000

struct?Student?{
	char?id[MAXID+1];
	char?name[MAXNAME+1];
	int?grade;
}?Record[MAXN];

int?ComparId（const?void?*a?const?void?*b）
{??
???return?strcmp（（（const?struct?Student*）a）->id
	?????????????（（const?struct?Student*）b）->id）;
}

int?ComparName（const?void?*a?const?void?*b）
{??
	int?k?=?strcmp（（（const?struct?Student*）a）->name
		???????????（（const?struct?Student*）b）->name）;
	if?（!k）?
		k?=?strcmp（（（const?struct?Student*）a）->id
		???????????（（const?struct?Student*）b）->id）;
???return?k;
}

int?ComparGrade（const?void?*a?const?void?*b）
{?
	int?k?=?（（（const?struct?Student*）a）->grade?>?
		?????（（const?struct?Stud