Compilare: user.cpp: In function ‘void BFS(int)’: user.cpp:37:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[s].size();++i) cd.push(v[s][i]); ^ user.cpp: In function ‘bool verif(int)’: user.cpp:59:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[crt].size();++j) if(viz[v[crt][j]] == false) cd.push(v[crt][j]); ^ user.cpp: In function ‘int main()’: user.cpp:91:11: warning: unused variable ‘a’ [-Wunused-variable] int i,a; ^ user.cpp: In function ‘void CB()’: user.cpp:86:8: warning: ‘best’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<best<<"\n"; ^