Compilare: user.cpp: In function ‘int main()’: user.cpp:110:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < paths.size() - 1; ++ i) ^ user.cpp: In function ‘int bfs()’: user.cpp:42:12: warning: ‘node’ may be used uninitialized in this function [-Wmaybe-uninitialized] return node; ^