Compilare: main.cpp: In function 'int main()': main.cpp:31:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int i = s.size();i < t.size(); i++) | ~~^~~~~~~~~~ main.cpp:37:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | if(k == s.size() - 1) | ~~^~~~~~~~~~~~~~~