Compilare: main.cpp: In function 'void Kruskal()': main.cpp:51:24: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 51 | if (sol.size() == n - 1) break; | ~~~~~~~~~~~^~~~~~~~ main.cpp: In function 'void Write()': main.cpp:59:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for (int i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~