Problem3426--【Div3】abc409c - Equilateral Triangle

3426: 【Div3】abc409c - Equilateral Triangle

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 3Submit Num: 6Statistics

Description

Sample Input Copy 

5 6
4 3 1 2

Sample Output Copy 

2

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Source/Category

Div3 桶 模除 
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