哪里错了啊，help

#include<stdio.h>
#include<string.h>
#include<iostream>
using namespace std;
struct stu {
    string name;
    int score[3];
    int sum;
};
struct stu mem[1000];
int main()
{
    int n,j,i,f=0;
    cin >> n;
    for (i = 0; i < n; i++)
        cin >> mem[i].name >> mem[i].score[0] >> mem[i].score[1] >> mem[i].score[2];
    for(i = 0; i < n; i++)
        mem[i].sum= mem[i].score[0]+ mem[i].score[1]+mem[i].score[2];
    int maxIndex = 0;
    for (i = 1; i < n; i++) 
        if (mem[i].sum > mem[maxIndex].sum)
            maxIndex = i;
    cout << mem[maxIndex].name << " " << mem[maxIndex].score[1] << " " << mem[maxIndex].score[2] << " " << mem[maxIndex].score[3] << endl;
    return 0;
}