Compilare: main.cpp: In function 'int main()': main.cpp:28:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for(int i=1;i<a.size();i++) | ~^~~~~~~~~ main.cpp:31:22: 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 j=1;j<b.size();j++) | ~^~~~~~~~~ main.cpp:49:9: warning: unused variable 'lmax' [-Wunused-variable] 49 | int lmax = 0; | ^~~~