Compilare: main.cpp: In function 'int main()': main.cpp:130:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for (int i = 0; i < res.size(); i++) | ~~^~~~~~~~~~~~ main.cpp:132:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 132 | for (int j = i + 1; j < res.size(); j++) | ~~^~~~~~~~~~~~