Compilare: main.cpp: In function 'void bfs(int)': main.cpp:16:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<lista[coada[inc]].size();i++) ~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:62:16: warning: 'j1' may be used uninitialized in this function [-Wmaybe-uninitialized] bfs(j1); ^