Compilare: user.cpp: In function ‘void bfs(int)’: user.cpp:56:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < LAD[nod].size(); i++) ~~^~~~~~~~~~~~~~~~~ user.cpp:72:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < LAD[nod].size(); i++) ~~^~~~~~~~~~~~~~~~~ user.cpp:81:11: warning: ‘nod’ may be used uninitialized in this function [-Wmaybe-uninitialized] ultim = nod; ~~~~~~^~~~~