Time Limit Exceed

#1

I have been trying this problem and I am not able to figure out why it is giving Time Limit Exceed.Please help me out by looking into the problem.

#2

Because of the constraints you need to do the insertion of a node in the LL, as well as merging both the LL in O(N).
You can check out this code

#3

What changes were asked to be made such that my code becomes error free have been made but the problem stays as it is but only passing one test case!

#4

Can you please help me by specifying the error: