std::vector<int> addArray(std::vector<int> a, std::vector<int> b)
{
    int max = -2000000000, min = 2000000000;
    map<int, bool> num1;
    for (int i = 0; i < a.size(); i++)
    {
        num1[a[i]] = true;
    }
    map<int, bool> num2;
    for (int i = 0; i < b.size(); i++)
    {
        if (num1[b[i]])
        {
            num2[b[i]] = true;
            if (b[i] > max) max = b[i];
            if (b[i] < min) min = b[i];
        }
    }
    vector<int> result;
    for (int i = min; i <= max; i++)
    {
        if (num2[i]) result.push_back(i);
    }
    return result;
}