Compilare: main.cpp: In function 'void kruskal_online(int, int, std::vector<int>&, std::vector<int>&, std::vector<int>&)': main.cpp:78:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < mst.size(); j++) { ~~^~~~~~~~~~~~ main.cpp:84:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (l = j; l < mst.size(); l++) { ~~^~~~~~~~~~~~ main.cpp:93:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j < mst.size() && max_suly < koltseg[mst[j]]) { ~~^~~~~~~~~~~~