Compilare: main.cpp: In function 'int main()': main.cpp:25:37: 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, l = 0, r = 0; i < s.size(); ++i) | ~~^~~~~~~~~~ main.cpp:29:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | while (i + m[i] < s.size() && s[i + m[i]] == s[i - m[i]])++m[i]; | ~~~~~~~~~^~~~~~~~~~ main.cpp:34:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int i = 0; i < s.size(); ++i) | ~~^~~~~~~~~~