Yep, super-skilled people actually write codes that can fit in just one screen in WIDTH 16 mode. They're called QSPs (quarter-screen programs) in contrast to regular OSPs (one-screen programs).
You don't need to be super smart to do QSP. If it doesn't fit, lower the standard! Here is the Flashlight App in QSP! This little known gem has four modes (use touchscreen): Off, Flashlight, Emergency Strobe, and DISCO!