Compilare: main.cpp: In function 'void Kruskal()': main.cpp:27:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for (int i = 0; i < graf.size() && cnt < M; ++i) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:54:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | for (int j = 0; j < blocuri.size(); ++j) { | ~~^~~~~~~~~~~~~~~~