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Problem3384--【Div4】abc400P2-Sum of Geometric Series

3384: 【Div4】abc400P2-Sum of Geometric Series

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Time Limit : 1.000 sec Memory Limit : 128 MB

Submit Solved: 13 Submit Num: 18 Statistics

Description

Sample Input Copy

7 3

Sample Output Copy

Source/Category

Div4 数学 atcoder

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