Compilare: main.cpp: In function 'int BFS(int)': main.cpp:37:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int BFS_2()': main.cpp:75:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp:64:17: warning: unused variable 'distanta' [-Wunused-variable] int newnod, distanta,drgmax; ^~~~~~~~