Compilare: user.cpp: In function ‘void Tarjan(int)’: user.cpp:24:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < my_nodes[t].size(); i ++) ^ user.cpp: In function ‘int main()’: user.cpp:79:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < scc[i].size(); j++) ^