Compilare: main.cpp: In member function 'void Solution::kruskal(int, std::vector<std::vector<int> >&, std::vector<std::vector<int> >&)': main.cpp:77:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for (int i=0; i < edges.size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:82:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for(int j=0; j<newEdges.size(); j++) | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:129:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 129 | for (int i = 0; i < newEdges.size(); i++) | ~~^~~~~~~~~~~~~~~~~