Compilare: main.cpp: In function 'int main()': main.cpp:90:51: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for(int i = max(0, (int)a.size() - (int)MOD); i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp:95:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | for (int i = 0; i < b.size(); i++) | ~~^~~~~~~~~~