Compilare: main.cpp: In function 'int unite(int, int, std::vector<int>&)': main.cpp:23:1: warning: no return statement in function returning non-void [-Wreturn-type] 23 | } | ^ main.cpp: In function 'int main()': main.cpp:43:22: 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] 43 | for(int i = 0; i < edges.size(); i++){ | ~~^~~~~~~~~~~~~~ main.cpp:52:23: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 52 | if(mst.size() == N-1){ | ~~~~~~~~~~~^~~~~~