No testcase is passing

#1

Sample input is giving me correct answer. I dont know where i went wrong. https://ide.codingblocks.com/s/94590

#2

Check order of parenthesis in your code
For n = 4,
()()()()
()()(())
()(())()
()(()())
()((()))
(())()()
(())(())
(()())()
(()()())
(()(()))
((()))()
((())())
((()()))
(((())))

This should be the correct answer

#3

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