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Closing, no answer after 8 months.
You can post your solution here with sploi flag
Never mind. Understood
I still can't figure out when or how to decide if given string is imposible to decode. I read other answer but it still does not make sense to me. Could you provide one example(s) with calculation.
121 is a palindrome in 1215
66, 393, 939, 929, 3663, 39293 and 936639 are palindromes in 39392936639
This comment is hidden because it contains spoiler information about the solution
It's the largest among the most frecuent numbers.
Hi,
...
=> study the info you got from the assertion messages, don't forget to print the inputs, work out your brain to trace back what you missed. ;)
Closing & cheers.
(if needed, you can answer with more information, so that we can clear this out)