Compilare: main.cpp: In function 'void bfs()': main.cpp:33:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<adiacenta[nod].size();i++) { ~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:51:8: warning: statement is a reference, not call, to function 'bfs' [-Waddress] bfs; ^ main.cpp:51:8: warning: statement has no effect [-Wunused-value]