问题很简单你只需要回答给定的字符串(只含有小括号)是否合法
如果合法输出"YES",否则输出"NO"(不含括号)
5
((((((()))))))
()()()()())(()((
()(()((()()())())()
((())()()()())())
()()()()()(())
YES
NO
NO
NO
YES
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