Compilare: main.cpp: In member function 'int Graph::kruskal(int, int)': main.cpp:62:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | for (int i = 0; i < edges.size(); i ++) { | ~~^~~~~~~~~~~~~~ main.cpp:78:1: warning: control reaches end of non-void function [-Wreturn-type] 78 | } | ^