best_quadrant_1.cpp

int best_quadrant(Matrix const& m)
{   
    int n = m.size() / 2;
    int sum = 0;
    for (int i : range(0, n))
    {
        for (int j : range(0, n))
        {
            auto flips = symetric_values(m, n, {i, j});
            sum += *std::max_element(flips.begin(), flips.end());
        }
    }
    return sum;
}