input:

3
5
3
3
5
6
6
5
5
3

output:

? 1 5
? 3 5
? 4 5
! 4
? 1 6
? 4 6
? 4 6
? 1 3
? 1 2

result:

wrong answer Too many queries , n = 6 , now_q 5 (test case 2)