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두 번째로 큰 수
Time Limit: 10 SecMemory Limit: 1024 MiB
Example Input 1Not Graded
5 2
1 3

>

>

2 5

<
Example Output 1


? 2 3

? 3 1

! 3

? 5 4

! 4
Category
Language-Specific Restrictions
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