Problem3408--【Div2】枚举子集练习 - abc404d-Goin' to the Zoo

3408: 【Div2】枚举子集练习 - abc404d-Goin' to the Zoo

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 0Submit Num: 1Statistics

Description



Input

Sample Input Copy 

4 3
1000 300 700 200
3 1 3 4
3 1 2 4
2 1 3

Sample Output Copy 

1800

HINT

Source/Category

Div2 枚举子集 位运算 dfs 
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