#include <stdio.h>
#include <time.h>
#include <stdlib.h>
#include <string.h>
void input();
void order();
void output();
void menu();
int sum=0;
struct stu
{
	int Id;
	float score1;
	float score2;
	float score3;
	float score;
	float arvscore;
}stu[1000];
int main()
{
	while(1)
	{
		menu();
	}
}
void menu()
{
	char t;
	printf("                              1.Input\n");
	printf("                              2.output\n");
	printf("                              3.order\n");
	printf("                              4.quit\n");
	t=getchar();
	if(t=='i')
	{
		printf("Please input info of the three students:\n");
		for(int i=0;i<3;i++)
		{
			input();
		}
		order();
		output();
		exit(0);
	}
	else if(t=='o')
	{
		printf("You are trying to Output info\n");
	}
	else if(t=='m')
	{
		printf("You are trying to Make things ordered\n");
	}
	else if(t=='q')
	{
		printf("You are about to Quit\n");
	}
	else
	{
		if(t!='\n')
		{
			printf("Wrong input\n");
		}
	}
}
void input()
{
	sum=sum+1;
	scanf("%d",&stu[sum].Id);
	scanf("%f",&stu[sum].score1);
	scanf("%f",&stu[sum].score2);
	scanf("%f",&stu[sum].score3);
	stu[sum].score=stu[sum].score3+stu[sum].score2+stu[sum].score1;
	stu[sum].arvscore=stu[sum].score/3;
}
void order()
{
	for(int i=1;i<=sum;i++)
	{
		for(int j=i;j<=sum;j++)
		{
			if(stu[i].score>stu[j].score)
			{
				stu[sum+1]=stu[i];
				stu[i]=stu[j];
				stu[j]=stu[sum+1];
			}
		}
	}
}
void output()
{
	for(int i=1;i<=sum;i++)
	{
		printf("%d %.1f %.1f\n",stu[i].Id,stu[i].score,stu[i].arvscore);
	}
}