Compilare: main.cpp: In function 'int main()': main.cpp:12:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | for(int i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:24:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i = 0; i < cs.size(); i++) | ~~^~~~~~~~~~~ main.cpp:31:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | while(i + l/2 + 1 < cs.size() && i - l/2 - 1 >= 0 && cs[i + l/2 + 1] == cs[i - l/2 - 1]) | ~~~~~~~~~~~~^~~~~~~~~~~ main.cpp:43:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(int i = 0; i < cs.size(); i++) | ~~^~~~~~~~~~~