for (int comp = 0; comp < all_components.size(); comp++) {
        bool find_edge = true;
        for (int vert : all_components[comp]) {
            for (int child : graph[vert]) {
                if (which_comp[child] != comp) {
                    find_edge = false;
                }
            }
        }
        if (find_edge) {
            stock++;
        }
    }

    for (int comp = 0; comp < all_components.size(); comp++) {
        bool find_edge = true;
        for (int vert : all_components[comp]) {
            for (int child : t_graph[vert]) {
                if (which_comp[child] != comp) {
                    find_edge = false;
                }
            }
        }
        if (find_edge) {
            not_stock++;
        }
    }