Unable to dry run this testcase?
Try making a new request with small values of n_high, t_high, *_high, etc.

2
4
1 4 1 4 
2 3 1 3 
9
9 1 4 2 4 9 9 1 5 
5 9 6 4 2 6 6 5 2 

2
1 3
2 3
-1

1
1 2
-1