Compilare: user.cpp: In function ‘void get_unique()’: user.cpp:90:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i(0); i < q.size(); i++) ~~^~~~~~~~~~ user.cpp: In function ‘void get_intervs()’: user.cpp:132:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i(0); i < newv.size(); i++) ~~^~~~~~~~~~~~~ user.cpp: In constructor ‘InputReader::InputReader(const char*)’: user.cpp:11:47: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, SIZE, 1, input_file); ^ user.cpp: In member function ‘void InputReader::advance()’: user.cpp:33:51: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, SIZE, 1, input_file); ^