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Hello, thanks for this puzzle.
I have a problem, I passed all the test cases in ide 100%, but when I submit the 3rd validator fails so I don’t know what to do now because I verified my code many times and I don’t know what is wrong in my solution
Apart from the endstates, the third test case and the third validator are identical. So you could try to use the third test case as input and check if all calculated endstates are correct.
yes I found my error thank you