Cannot find the error in code

#1

in the question “linked list k append”, my code is showing error. please tell the mistake in my code.
code: https://ide.codingblocks.com/s/105225

#2

hi shantanu i think your approach for the question is not correct.
can you please explain your logic

#3

i have commented the same code of mine to explain how i wanted it to work. i tried to move head to place after (N-n) element and join end to head(using temp).

#4

i will check your code

#5

your logic seems to be correct. but it is too slow for the test cases so it is giving TLE.
try optimizing it or thinking of something else

#6

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