A good challenging task. Very nice input format of cell arrays.
Solving a grid of 75x60 squares within Cody's time limit is extra hard. The greatest challenge is to find a fast code; recursion with backtracking no longer seems like a viable option. And I do hope the author is aware that nonograms are an NP-hard problem, which means there is no known fast algorithm to solve the general case: we have to build one for the specific cases of the test suite.
To any new challengers, know that only logic will not solve these puzzles. You will need some guessing, which means make the computer solve it as far as it can and then you, yes YOU, look at the picture (we humans can recognize the shape and finish the puzzle; the computer not so much). And, please, fell free to try some solvers out there.
Increment a number, given its digits
7 segment LED display
Solve the picross! (Easy)
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