#1686. 防守战线

    ID: 1686 Type: Default 3000ms 512MiB Tried: 0 Accepted: 0 Difficulty: (None) Uploaded By: Tags>ZJOI2013 NOIP 省选 高级

防守战线

说明

样例

5 3
1 5 6 3 4
2 3 1
1 5 4
3 5 2

11

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