input:

3
5
3
2
3
3
6
6
5
3
4

output:

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

result:

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