Compilare: main.cpp: In function 'bool dfs(int, int)': main.cpp:29:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int i = 0; i < ad[vf].size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:75:6: warning: 'aux' may be used uninitialized in this function [-Wmaybe-uninitialized] 75 | g << aux; | ^~~