Problem 4996. -- [Usaco2017 Feb]Why Did the Cow Cross the Road II

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Problem 4996. -- [Usaco2017 Feb]Why Did the Cow Cross the Road II

4996: [Usaco2017 Feb]Why Did the Cow Cross the Road II

Time Limit: 10 Sec Memory Limit: 256 MB
Submit: 120 Solved: 107
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Description

Input

Output

Sample Input

10 6 5
2
10
1
5
9

Sample Output

1

HINT

Source

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