3
6 1 2 5 7 5 2 1
4 1 4 7 4 1
5 2 3 6 5 4 2
my solution:
15 2 5 7 5 2 1 2 3 6 5 4 7 4 1 4 2

2
4 1 2 3 4 1
4 1 2 3 4 1
my solution:
4 1 2 3 4 1

4
1 1 1
1 1 1
1 1 1
1 1 1
my solution:
1 1 1

Are there any test cases for debugging?