Kth root problem

#1


this code is working fine .there is no any issue .

but when i have made a trivial changes , at line 10 , in above code . here is the edited code

its giving the wrong answer

please explain why it is happening

#2

Please check, both the codes are giving wrong answer.

#3

correct answer code

#4


this is giving wrong answer

#5

Your working code should also have given the wrong answer, because calculating pow(mid,k) should gives wrong answer due to overflow. I would suggest you to write your own power function to handle overflow.

1 Like
#6

but it has passed all the test cases

#7

There has to be some issue with compiler.
You are calculating pow(n,k) in which n can be (10^15)/2 and k can be 10000. Now that is a very large number which cannot be stored in long long , so your code is working somehow because of some garbage value. I can assure you its incorrect and suggest you to write your own power function which checks the overflow rather than relying on inbuilt pow() function.

#8

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