Compilare: user.cpp: In member function ‘int Task::get_result()’: user.cpp:46:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < adj[n].size(); i++){ ~~^~~~~~~~~~~~~~~ user.cpp: In member function ‘int Task::dfs(int, std::vector<int>&)’: user.cpp:62:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < adj[node].size(); i++){ ~~^~~~~~~~~~~~~~~~~~