Compilare: user.cpp: In function ‘void dfssc(int)’: user.cpp:31:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:69:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < sc[i].size(); j++) ^