Why am I getting MLE error?

#1

What are MLE errors? Why am i getting MLE error in this question?

Please check what is wrong in my code

Link: https://ide.codingblocks.com/s/257622

#2

@HemantKumar,
You are declaring an array of size 1<<h i.e 4*2^50 Bytes = 2^52 Bytes = 4.5 PetaBytes. which probably is more than your computer’s memory.