If you have a two dimension array, then you add one to each dimension, if you prefer starting at 1. So yes, add one to both. Then your first index is [1,1], last is [50,3].
It's better in the long run if you get used to dealing with indexing from 0 - you just subtract one when dealing with "Level 1", but if you don't want to deal with it, just add one when setting your bounds.