Compilare: main.cpp: In function 'int main()': main.cpp:26:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 26 | if (nr.size()>=k) { | ~~~~~~~~~^~~ main.cpp:28:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (int x=nr.size()-1; x>=nr.size()-k; --x) fout<<nr[x]<<" "; | ~^~~~~~~~~~~~~