#include <stdio.h>
#define MAX 10
void main() {
  int id[MAX],ch[MAX],ma[MAX],en[MAX],pos[MAX],c,aa,bb,i,n,j,k;
  float avg[MAX];

  printf("give me max person -->"); scanf("%d",&n);
  if (n > MAX) { printf("over the student number --> exit\n"); exit(0); }
  for (i=0; i<n; i++) {
  printf("give me %dth person id,chinese,mathematics,english score ->",i+1);
    scanf("%d %d %d %d",&id[i],&ch[i],&ma[i],&en[i]);
    avg[i]=(ch[i]+ma[i]+en[i])/3.0;
  } /* input data and compute average */
  printf("input data is followed -->\n");
  printf(" id chi mat eng averag pos\n");
  for (i=0; i<n; i++) {
    printf("%3d %3d %3d %3d %6.2f\n",id[i],ch[i],ma[i],en[i],avg[i]);
    pos[i]=1;
  }
  /* sorting */
  for (i=0; i<n; i++)
    for (j=0; j<n; j++)
      if (i != j)
	if (avg[i] < avg[j]) pos[i]++;

  printf("sorted data is followed -->\n");
  printf(" id chi mat eng averag pos\n");
  for (i=0; i<n; i++)
  printf("%3d %3d %3d %3d %6.2f %3d\n",id[i],ch[i],ma[i],en[i],avg[i],pos[i]);
}