Need help in understanding the second sample test case

Правка en1, от CandidFlakes, 2023-08-18 13:13:44

I am trying to solve this question. I am facing difficulty in understanding the diagram of test case 2. As far as I have understood the question, the question asks to check whether is it possible to create 180 degree rotated image by changing colour of any possible combination of blocks exactly k times. If we look at the second sample test case 2, it's image is  So, it's 180 degree rotated image should look like this  But, in the question the rotated image is give like this

I am unable to understand how is it possible? Please explain the logic behind it.

My next question is that

Теги pattern, rotation, grid, colour

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en2 Английский CandidFlakes 2023-08-18 13:23:14 450 (published)
en1 Английский CandidFlakes 2023-08-18 13:13:44 815 Initial revision (saved to drafts)