Machine Learning coder
int solution(vector<int>arr){
int ans=INT_MIN;
int result=-1;
vector<int>weight(arr.size(),0);
for(int i=0;i<arr.size();i++){
int source=i;
int dest=arr[i];
if(dest!=-1){
weight[dest]+=source;
if(ans<=weight[dest]){
ans=max(ans,weight[dest]);
result=dest;
}
}
}
if(ans!=INT_MIN)
return result;
return -1;
}
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