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Same problem with mine
I have to agree with dafuloth, the description is very difficult to understand and even after forfeiting to see the solution I don't understand the math behind.
Description said:
to figure out how many meters the path length of squirrel climbed when it reached the tree top.Note,
the path length of squirrel climbed, S isthe length of its circumference, notthe path length of squirrel climbed in a loop.Is this clear?
EDIT: You can flatten the tree like a paper, in your imagination. Then rethink this problem.
The answer is: no
Sorry for late ;-)
Note that the tests you fail have repeating letters where you don't respect the string length.