Problem3419--【Div2】abc407d - Domino Covering XOR

3419: 【Div2】abc407d - Domino Covering XOR

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 2Submit Num: 2Statistics

Description




Sample Input Copy 

3 4
1 2 3 8
4 0 7 10
5 2 4 2

Sample Output Copy 

15

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Source/Category

Div2 位运算 搜索 DFS 
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