i've been doing (a) Squats, bench, OHP and (b) dead, rows, pullups every monday, wednesday, friday and just alternate between "a" and "b" days. this only take about an hour or so, and leaves time for extra shit which i sometimes do. it hits all the major muscle muscle groups and depending on how i feel that day and whatnot, allows me to go heavy or keep it light and focus on hypertrophy.
i either stick to a 3x5, 5x5, or 8x4 for the most part depending on how i feel and what i'm trying to accomplish with whichever lift (deads and squats are fewer reps as a foundation of strength is pretty much the best and only reason to do them, whereas with shoulders and if i am feeling up to it triceps and bi's, the motivation is more cosmetic... at least for me anyway. i'm pretty sure i still have ADHD, i know i did as a kid. anyway this routine works pretty well for me. i just need to stop eating like a fat ass all the time. thats probably more due to the pot than the ADHD though.)