0分，怎么改？

#include<bits/stdc++.h>
using namespace std;
struct student
{
	string name;
	int a,b,c;
	int sum;
};
int cmp(student a,student b){
	return a.sum>b.sum;
}
student box[1000];
int main(){
	int n;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>box[i].name>>box[i].b>>box[i].a>>box[i].c;
		box[i].sum=box[i].a+box[i].b+box[i].c;
	}
	sort(box+1,box+n+1,cmp);
	cout<<box[1].name<<" "<<box[1].b<<" "<<box[1].c<<endl;
	return 0;
}