Problem2843--【CSP-S2022】P1 - 假期计划

2843: 【CSP-S2022】P1 - 假期计划

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Time Limit : 1.000 sec  Memory Limit : 128 MB

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Description






Sample Input Copy 

8 8 1
9 7 1 8 2 3 6
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 1

Sample Output Copy 

27

HINT

Source/Category

CSP-S 
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