Output of empty lines

Output of empty lines

Dmitry Vyukov's picture

Do we need to output empty lines as "()"? For example, "dimentions 2x2 (2) ()"? Or we may skip them"dimentions 2x2 (2)"?

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mdma's picture
my understanding is that a group is needed only where there is a "change" in the rectangle configuration on a given horizontal line. An empty group implies no change and so would be redundant. In the example there is no change - the 2x2 rectangle occupies all of the 2x2 space available, so (2) is sufficient.

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