Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:107:68: warning: narrowing conversion of ‘it.__gnu_cxx::__normal_iterator<_Iterator, _Container>::operator-><std::pair<int, int>*, std::vector<std::pair<int, int> > >()->std::pair<int, int>::second’ from ‘int’ to ‘double’ inside { } [-Wnarrowing] if(op==3) muchii.push_back({dad, it->first, it->second}); ^ user.cpp: In function ‘double kruskal()’: user.cpp:150:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<muchii.size(); i++) ^ user.cpp: In function ‘void kruskal_sum()’: user.cpp:171:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<muchii.size(); j++) ^