Problem3396--【Div3】abc402c - Dislike Foods

3396: 【Div3】abc402c - Dislike Foods

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 7Submit Num: 12Statistics

Description





Sample Input Copy 

5 4
2 1 2
3 3 4 5
3 1 2 5
1 3
1 3 2 5 4

Sample Output Copy 

0
1
2
3
4

HINT

Source/Category

Div3 数据结构 
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