1 tc giving wa in SUMSUMS problem

#1

my sol : https://ide.codingblocks.com/s/240592
ques : https://hack.codingblocks.com/app/contests/1463/700/problem

1 tc is showing MLE !!!
i am not able to understand where my code is going wrong and what is MLE ?!

#2

You need to pass the vector by reference rather than value in the recursive function. It creates numerous copies in recursive function.

#3

MLE stands for memory limit exceeded and it is caused when you use more memory than the specified memory limit.