Compilare: main.cpp: In function 'void Kruskal(std::vector<std::pair<int, std::pair<int, int> > >)': main.cpp:52:41: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 52 | for(int i = 1; i <= M && rez.size() < N; ++i) { | ~~~~~~~~~~~^~~ main.cpp:61:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(int i = 1; i < rez.size(); ++i) | ~~^~~~~~~~~~~~