Problem2020--noip2015 金币

2020: noip2015 金币

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 26  Solved: 20
[Status] [Submit] [Creator:]

Description

Sample Input Copy 

1000

Sample Output Copy 

29820

Source/Category

noip noip2015 noip普及组 
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