70分！ 6 8 9 三个点错了 求助！

using namespace std;
int a[305],b[305],c[305],sum[305],indx[305];
bool compare(int i,int j){
    if(sum[i]!=sum[j])return sum[i]>sum[j];
    else if(a[i]!=b[j])return a[i]>b[j];
    else return i<j;
}
int main(){
    int n;
    cin>>n;
    for(int i=0;i<n;i++){
        indx[i]=i;
    cin>>a[i]>>b[i]>>c[i];
    sum[i]+=(a[i]+b[i]+c[i]);
    }
    sort(indx,indx+n,compare);
    if(n>=5){
    for(int i=0;i<5;i++){
        cout<<indx[i]+1<<' '<<sum[indx[i]]<<endl;
    }
}
else  for(int i=0;i<n;i++){
        cout<<indx[i]+1<<' '<<sum[indx[i]]<<endl;
    }
    return 0;
}