Compilare: main.cpp: In function 'int main()': main.cpp:34:32: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare] 34 | while(k>=1 && ans.size()<n) | ~~~~~~~~~~^~ main.cpp:36:17: warning: unused variable 'aux' [-Wunused-variable] 36 | int aux=ans.size(); | ^~~ main.cpp:47:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i=0;i<ans.size();i++) | ~^~~~~~~~~~~