Compilare: main.cpp: In function 'void DFS(int, int, std::vector<bool>&, std::vector<int>&, std::vector<int>&)': main.cpp:19:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (auto i = 0; i < A[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void BFS(int, int, int, int&)': main.cpp:41:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (auto i = 0; i < A[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:85:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:100:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sol.size(); i++) ~~^~~~~~~~~~~~