Compilare: main.cpp: In function 'int main()': main.cpp:17:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for (int i = 0; i < nr.length(); i ++) { | ~~^~~~~~~~~~~~~ main.cpp:24:27: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 24 | while (nrFinal.size() > n-k) | ~~~~~~~~~~~~~~~^~~~~