vector<Cluster> get_clusters(int raza1, int raza2)
{
    vector<Cluster> ans;

    for (int i = 0; i < warehouse.size(); i++)
    {
        Cluster cluster;
        cluster.warehouse = i;
        ans.push_back(cluster);
    }

    for (int i = 0; i < order.size(); i++)
    {
        int dist = 1000000000,disti = -1;
        for (int j = 0; j < warehouse.size(); j ++)
        {
            int dist_current = distance(order[i].x, order[i].y, warehouse[j].x, warehouse[j].y);
            if (dist_current >= raza1 && dist_current  <= raza2 && dist > dist_current)
            {
                dist = dist_current;
                disti = j;
            }
        }
        if (disti != -1)
        {
            ans[disti].orders.push_back(i);
        }
    }

    sort(ans.begin(), ans.end(), compare_clusters());
    return ans;
}