Compilare: user.cpp: In function ‘void bfs(int, bool*, std::vector<int>*)’: user.cpp:17:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < adjList[x].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:45:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < v.size() - 1; i++) ^ user.cpp:46:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = i + 1; j < v.size(); j++) ^