Compilare: main.cpp: In function 'int kruskal(std::vector<std::vector<int> >&, std::vector<int>&, std::vector<int>&, int, int)': main.cpp:19:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int i = 0; i < muchii.size(); i++){ | ~~^~~~~~~~~~~~~~~ main.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type] 41 | } | ^