Compilare: user.cpp: In function ‘bool bfs(int)’: user.cpp:128:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[s].size();i++) ^ user.cpp: In function ‘void bfs2(int, int*)’: user.cpp:159:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:190:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[n].size();i++) ^ user.cpp:216:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<muchie.size();i++) ^