Compilare: main.cpp: In function 'int main()': main.cpp:32:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(i=0;i<w.size();i++) | ~^~~~~~~~~ main.cpp:57:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(i=0;i<k.size();++i) | ~^~~~~~~~~