Compilare: main.cpp: In function 'int main()': main.cpp:52:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 52 | if(ans.size() == n - 1) | ~~~~~~~~~~~^~~~~~~~ main.cpp:58:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for (int i = 0; i < ans.size(); i++) | ~~^~~~~~~~~~~~