Problem3624--【Div2】【Div2】GESP202509 五级 - 数字选取

3624: 【Div2】【Div2】GESP202509 五级 - 数字选取

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 1Submit Num: 1Statistics

Description

Sample Input Copy 

9

Sample Output Copy 

5

Source/Category

GESP 质数 筛法 
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