Compilare: main.cpp: In function 'int main()': main.cpp:11:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 11 | for(i=0;i<b.size();i++){ | ~^~~~~~~~~ main.cpp:15:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | if(i >= a.size() - 1) | ~~^~~~~~~~~~~~~~~ main.cpp:23:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(i=0;i<v.size();i++) | ~^~~~~~~~~