Problem3390--【Div3】abc401C-K-bonacci

3390: 【Div3】abc401C-K-bonacci

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 12Submit Num: 30Statistics

Description

Sample Input Copy 

4 2

Sample Output Copy 

5

Source/Category

Div3 前缀和 数组 
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