Compilare: user.cpp: In constructor ‘PalTree::PalTree(std::__cxx11::string, long long int, long long int)’: user.cpp:281:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < basePow.size (); ++ i) { ~~^~~~~~~~~~~~~~~~~ user.cpp: In member function ‘char Reader::GetChar()’: user.cpp:76:33: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread (buff, 1, 4096, inp); ^