70分

#include <bits/stdc++.h>
using namespace std;
struct student
{
	int xuehao;
	int yu,shu,ying,zf;	
	int ai;
};
bool cmp(student x,student y)
{
	return (x.zf>y.zf||(x.zf==y.zf&&x.ai<y.ai));
}
 
student a[1002];
int main()
{
	int n;
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i].yu>>a[i].shu>>a[i].ying;
		a[i].zf=a[i].yu+a[i].shu+a[i].ying;
		a[i].ai=i;
		a[i].xuehao=i;
	}
	sort(a+1,a+n+1,cmp);
	for(int i = 1;i<=5;i++)
	{	
		cout<<a[i].xuehao<<" "<<a[i].zf<<endl;
	}
	return 0;
 } 

50分

#include <bits/stdc++.h>
using namespace std;
struct student
{
	int xuehao;
	int yu,shu,ying,zf;	
	int ai;
};
bool cmp(student x,student y)
{
	return (x.zf>y.zf);
	if(x.zf==y.zf)
	{
		return (x.yu>y.yu);
		if(x.yu==y.yu)
		{
			return (x.xuehao<y.xuehao);
		}
	}
}

student a[1002];
int main()
{
	int n;
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i].yu>>a[i].shu>>a[i].ying;
		a[i].zf=a[i].yu+a[i].shu+a[i].ying;
		a[i].ai=i;
		a[i].xuehao=i;
	}
	sort(a+1,a+n+1,cmp);
	for(int i = 1;i<=5;i++)
	{	
		cout<<a[i].xuehao<<" "<<a[i].zf<<endl;
	}
	return 0;
 } 

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