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4834: P2853 [USACO06DEC] Cow Picnic S

Memory Limit：128 MB Time Limit：1.000 S
Judge Style：Text Compare Creator：huangyaoying
Submit：0 Solved：0

Description

Input

Output

Sample Input Copy 

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

Sample Output Copy 

2

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