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- Recursive Digit Sum
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Recursive Digit Sum
Recursive Digit Sum
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For anyone struggling with the last test case and getting overflow: you might have to use a 64-bit integer to hold the super digit value, even if you choose to return a 32-bit integer at the end:
setting the n constraint to 10^100000 is pure evil lol
Not correct all tests
Tests are not even correct.
I think the test are broken. I'm getting the results that match the sample, while the test results do not match the sample.