Compilare: main.cpp: In function 'int main()': main.cpp:25:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for (int i = 0; i < a.size(); i++){ | ~~^~~~~~~~~~ main.cpp:35:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for (int i = 0; i < a.size(); i++){ | ~~^~~~~~~~~~ main.cpp:46:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for (int i = a.size(); i < b.size(); i++){ | ~~^~~~~~~~~~ main.cpp:56:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for (int i = 0; i < rez.size(); i++){ | ~~^~~~~~~~~~~~