Compilare: user.cpp: In function ‘void tarjan(int)’: user.cpp:14:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Lista[nc].size();i++){ ^ user.cpp: In function ‘int main()’: user.cpp:45:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol[j].size();i++) ^