Compilare: main.cpp: In function 'bool ok(std::string, std::string)': main.cpp:18:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for(int i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | if(j == b.size()) | ~~^~~~~~~~~~~ main.cpp: In function 'bool continut(std::string, std::vector<std::__cxx11::basic_string<char> >)': main.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for(int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for(int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~