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字符串 I

Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)
Total Submission(s): 2    Accepted Submission(s): 1


Problem Description
计算字符串中满足括号匹配的子串的个数。
 

Input
输入有多组,请处理到文件结尾。
对于每一组,输入是一个仅包含’(‘和’)’的字符串,字符串长度 <=300000
 

Output
对于每一组输入,输出包含一个数字,表示满足括号匹配的字符串的个数。
 

Sample Input
()() ((()) (
 

Sample Output
3 2 0
 

Author
1219449592
 

Source
 

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