Problem1869--【CSP2021-S-T2】括号序列

1869: 【CSP2021-S-T2】括号序列

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Time Limit : 1.000 sec  Memory Limit : 512 MB

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Solved: 1Submit Num: 6Statistics

Description

Input

Output

Sample Input Copy 

7 3
(*??*??

Sample Output Copy 

5

HINT



Source/Category

NOIP 
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