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CF1574A.Regular Bracket Sequences
Regular Bracket Sequences
A bracket sequence is a string containing only characters "(" and ")". A regular bracket sequence is a bracket sequence that can be transformed into a correct arithmetic expression by inserting characters "1" and "+" between the original characters of the sequence. For example, bracket sequences "()()" and "(())" are regular (the resulting expressions are: "(1)+(1)" and "((1+1)+1)"), and ")(", "(" and ")" are not.
You are given an integer . Your goal is to construct and print exactly different regular bracket sequences of length .
Input
The first line contains one integer () — the number of test cases.
Each test case consists of one line containing one integer ().
Output
For each test case, print lines, each containing a regular bracket sequence of length exactly . All bracket sequences you output for a testcase should be different (though they may repeat in different test cases). If there are multiple answers, print any of them. It can be shown that it's always possible.
Samples
3
3
1
3
()()()
((()))
(()())
()
((()))
(())()
()(())
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