test 1 case 2 mismatch: expected 4 got 2
input:
5
6
1 2 3 4 5 6
7
1 2 1 1 1 3 4
1
1
10
1 2 3 4 1 3 2 1 1 10
5
4 4 4 4 4
reference output:
5
4
0
5
4

participant output:
5
2
0
4
4

exit status 1