Problem3649--【语言基础】abc469b - Isolated Seats

3649: 【语言基础】abc469b - Isolated Seats

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 3Submit Num: 4Statistics

Description



Sample Input Copy 

8
xxoxxxox

Sample Output Copy 

2

Source/Category

字符串 
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