Russian Twist Reps

I didn't see how we're suppose to count our reps when going from one side to another?

For example, in the Russian Twist, does:

1) Rep to the left side, then rep to the right = 1  rep?
 

or does

2) Rep to the left side = 1 rep

   Rep to the right side = 1 rep?

& I imagine this is how we're counting our reps whenever we have contralateral movement reps, correct?

Thanks guys!  Y'all rock!  Feeling better already! 

#2 - 1 rep per side for 15 per side / 30 total. When the course gives you a total number of reps without an @ sign (per side) it will be counted this way.