For quality:
20 Strict Chest to bar pull-ups (pronated grip)
20 Strict Wide grip pull-ups (chin over) (Pronated grip)
20 Chin-ups (supinated grip)
*Each time you break 5 push-ups + 10 air squats
Sx: If you will be breaking more than 3 times per pull-up variation do 2-3 push-ups + 4-6 squats
*Use a band or put your foot on a box to assist so that you can do each pull-up variation in 3-4 sets max.