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Re:水题

Posted by jackjie at 2012-03-29 21:10:45 on Problem 3991
In Reply To:这题怎么解 Posted by:kea_IV at 2012-03-29 21:05:52 
把为配对的左括号计数，然后遇到右括号的时候左括号就配对一个，如果没有可以配对的，那么这个右括号是一定需要修改的，这样一直到最后未配对的左括号数只需要修改一半即可完成配对
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