Compilare: user.cpp: In function ‘std::vector<int> ssm(std::vector<int>&)’: user.cpp:19:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < vect.size(); ++i) { ^ user.cpp:36:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < vect.size(); ++i) { ^ user.cpp:18:6: warning: unused variable ‘max_num’ [-Wunused-variable] ull max_num = numeric_limits<ull>::min(); ^ user.cpp: In function ‘int main()’: user.cpp:64:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < out.size(); ++i) { ^