Compilare: main.cpp: In function 'void bfs()': main.cpp:64:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); ++i) { ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:88:19: warning: 'aux' may be used uninitialized in this function [-Wmaybe-uninitialized] v[x].push_back({y, z, 0, aux}); ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~