Catalan Number WA in last test case

#1

I am getting wrong answer in just last test case, can someone please suggest to me what I’m doing wrong
code: https://ide.codingblocks.com/s/87004

#2

your catalan numbers above 31 are wrong printed

#3

Please suggest any method about how to fix it

#4

use memoisation withr ecurrence

#5

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