Problem3648--【语言基础】abc469a - Train Car

3648: 【语言基础】abc469a - Train Car

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 2Submit Num: 2Statistics

Description

Sample Input Copy 

5
2

Sample Output Copy 

4

HINT

50

Source/Category

语言基础 
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