Compilare: main.cpp: In function 'int main()': main.cpp:20:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for (int i = 0; i < s.size(); i += 8) { | ~~^~~~~~~~~~ main.cpp:43:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for (int i = 0; i < vda.size(); i++) | ~~^~~~~~~~~~~~ main.cpp:47:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for (int i = 0; i < vnu.size(); i++) | ~~^~~~~~~~~~~~