Compilare: main.cpp: In function 'int main()': main.cpp:74:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for (int i=0; i<n.size() && res.size() < n.size()-k; i++) { | ~^~~~~~~~~ main.cpp:90:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for (int i=0; i<res.size(); i++) | ~^~~~~~~~~~~