Compilare: user.cpp: In function ‘std::vector<int> sol(std::vector<int>)’: user.cpp:9:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v.size(); i++) ~^~~~~~~~~ user.cpp:11:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i==v.size()-1 && v[i]/(i+2)) ~^~~~~~~~~~~~ user.cpp:13:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (i<v.size()-1) ~^~~~~~~~~~~