Hi, Do anyone know why my output is working properly on vs code and other editor but here output in stdout is empty.`vector dynamicArray(int n, vector> queries) { vector> arr(n,vector()); int lastAnswer = 0; int q_no = queries.at(0).at(1); vector res;

for(int i=1; i<=q_no; i++){
    int query_typ = queries.at(i).at(0);

    int x = queries[i][1];
    int y = queries[i][2];
    int idx = (x^lastAnswer)%2;

    if(query_typ==1){
        arr[idx].push_back(y);
    } 
    else if(query_typ==2)
    {
        lastAnswer = arr[idx][y];
        res.push_back(lastAnswer);
    }

}
return res;

}`