Doubt in a question

#1

In the yesterday codeforces round… in 2nd second question…
https://codeforces.com/contest/1427/problem/B
I have come up with a DP solution… I have used recursion + memoization …
This is my code…
But it was showing memory limit exceeded error in pretest-3.
can you see my code…
Where can be optimised this.
Is it even possible to solve this question with recursion+memoization.
This is my code.


Thanks

#2

hello @ashishnnnnn

see the constraints
image

dp will never work on it , as we dont have that much space to memoise the result of 3d dp

#3

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