Compilare: main.cpp: In function 'int main()': main.cpp:65:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for (int i = 0; i < ans.size(); ++i) { | ~~^~~~~~~~~~~~ main.cpp:66:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | cout << ans[i] << (i + 1 == ans.size() ? "" : " "); | ~~~~~~^~~~~~~~~~~~~