Compilare: main.cpp: In function 'void BFS(int)': main.cpp:29:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<drum[node].size(); i++) ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:74:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<drum[n].size(); i++) if (vizit[drum[n][i]]==1) ~^~~~~~~~~~~~~~~ main.cpp:66:9: warning: unused variable 'aux' [-Wunused-variable] int aux; ^~~