Compilare: main.cpp: In function 'void dfs(int)': main.cpp:20:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for (int i = 0; i < G[nod].size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:24:24: warning: comparison of integer expressions of different signedness: 'std::queue<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 24 | if (ord.size() == n) return; | ~~~~~~~~~~~^~~~