for int loops_nodes size This is the worst example of code this paints

for (int i=0; i<loops_nodes.size(); i++)
        // This is the worst example of c++ code
        // (this paints shortest cycle edges to red
    {
        if (loops_nodes[i].second==min)
        {
            for (int j=0; j<loops_nodes[i].first.size();j++)
            {
                loops_nodes[i].first[j]->color=Qt::red;
                loops_nodes[i].first[j]->update();
            }
            for (int k=0; k<loops_nodes[i].first.size();k++)
            {
                for (int l=k; l<loops_nodes[i].first.size(); l++)
                {
                    for (int e=0; e<loops_nodes[i].first[k]->edges.size(); e++)
                    {
                        if (
                                (
                        ((Edge*)(loops_nodes[i].first[k]->edges[e]))->one
                        ==loops_nodes[i].first[k]
                                &&
                        ((Edge*)(loops_nodes[i].first[k]->edges[e]))->two
                        ==loops_nodes[i].first[l]
                                )
                                ||
                                (
                        ((Edge*)(loops_nodes[i].first[k]->edges[e]))->two
                        ==loops_nodes[i].first[k]
                                &&
                        ((Edge*)(loops_nodes[i].first[k]->edges[e]))->one
                        ==loops_nodes[i].first[l]
                                )
                        )
                        {
                            ((Edge*)(loops_nodes[i].first[k]->edges[e]))->color
                                    =Qt::red;
                            loops_nodes[i].first[k]->edges[e]->update();
                        }
                    }
                }
            }
            break;
        }
    }