Compilare: user.cpp: In function ‘void ReadInput()’: user.cpp:73:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &N, &M, &B); events.resize(M); ^ user.cpp: In member function ‘void InputReader::GetBuffer()’: user.cpp:29:49: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, 1, kBufferSize, stdin); ^