Compilare: main.cpp: In function 'int main()': main.cpp:33:32: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare] 33 | while(k>=1 && ans.size()<n) | ~~~~~~~~~~^~ main.cpp:48:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(int i=0;i<ans.size();i++) | ~^~~~~~~~~~~