Compilare: main.cpp: In function 'void Manacher(std::__cxx11::string)': main.cpp:16:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= 2 * s.size() + 1; i += 2) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); i++) ~~^~~~~~~~~~ main.cpp:26:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= 2 * s.size() + 1; i++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:45:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= 2 * s.size() + 1; i++) ~~^~~~~~~~~~~~~~~~~~~