#include<stdlib.h>
typedef?struct?Student
{
double?score[4];
double?sum;
double?avg;
}stu;
void?save(int?n)
{
FILE?*w?=?fopen("score.dat","w");
printf("Please?input?%d?students'?4?scores:\n",n);
int?i;
double?score[4];
double?sum;
for(i=0;i<n;i++)
{
sum?=?0;
scanf("%lf%lf%lf%lf"?,&score[0],&score[1],&score[2],&score[3]);
sum?=?score[0]+score[1]+score[2]+score[3];
fprintf(w,"%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n"?,score[0],score[1],score[2],score[3],sum,sum/4);
}
fclose(w);
return;}
void?read(stu?a[])
{
FILE?*r?=?fopen("score.dat","r");
int?i=0;
while(fscanf(r,"%lf%lf%lf%lf%lf%lf"?,&a[i].score[0],&a[i].score[1],&a[i].score[2],&a[i].score[3],&a[i].sum,&a[i].avg)!=?EOF)
{
i?=?i+1;
}
fclose(r);
return;
}
void?sort(stu?a[],int?n)
{
int?i;
int?j;
stu?tmp;
for(i=n-1;i>0;i--){
for(j=0;j<i;j++){
if(a[j].sum?<?a[j+1].sum){
tmp?=?a[j];
a[j]?=?a[j+1];
a[j+1]?=?tmp;
}
}
}
return;
}
void?output(stu?a[],int?n)
{
FILE?*w?=?fopen("score.dat","w");
int?i;
for(i=0;i<n;i++)
{
fprintf(w,"%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n"?,a[i].score[0],a[i].score[1],a[i].score[2],a[i].score[3],a[i].sum,a[i].avg);
}
fclose(w);
}
int?main()
{
stu?a[128];
int?n;
while(scanf("%d",&n)?!=?EOF)
{
if(n?<=?0)?break;
save(n);
read(a);
sort(a,n);
output(a,n);
}
return?0;
}