Compilare: main.cpp: In function 'int kruskal()': main.cpp:74:20: 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] 74 | for (int i=0; i<lista_adiacenta.size(); i++) | ~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:90:1: warning: control reaches end of non-void function [-Wreturn-type] 90 | } | ^