Unexpected test case output


#1

For this input in one of the test case:
A : [ 2, 0, 1, 2, 0, 3, 2, 2, 2, 1, 0, 0, 0, 1, 0, 0, 2, 2, 2, 3, 2, 3, 1, 2, 1, 2, 2, 3, 2, 3, 0, 3, 0, 2, 1, 2, 0, 0, 3, 2, 3, 0, 3, 0, 2, 3, 2, 2, 3, 1, 3, 3, 0, 3, 3, 0, 3, 3, 2, 0, 0, 0, 0, 1, 3, 0, 3, 1, 3, 1, 0, 2, 3, 3, 3, 2, 3, 3, 2, 2, 3, 3, 3, 1, 3, 2, 1, 0, 0, 0, 1, 0, 3, 2, 1, 0, 2, 3, 0, 2, 1, 1, 3, 2, 0, 1, 1, 3, 3, 0, 1, 2, 1, 2, 2, 3, 1, 1, 3, 0, 2, 2, 2, 2, 1, 0, 2, 2, 2, 1, 3, 1, 3, 1, 1, 0, 2, 2, 0, 2, 3, 0, 1, 2, 1, 1, 3, 0, 2, 3, 2, 3, 2, 0, 2, 2, 3, 2, 2, 0, 2, 1, 3, 0, 2, 0, 2, 1, 3, 1, 1, 0, 0, 3, 0, 1, 2, 2, 1, 2, 0, 1, 0, 0, 0, 1, 1, 0, 3, 2, 3, 0, 1, 3, 0, 0, 1, 0, 1, 0, 0, 0, 0, 3, 2, 2, 0, 0, 1, 2, 0, 3, 0, 3, 3, 3, 0, 3, 3, 1, 0, 1, 2, 1, 0, 0, 2, 3, 1, 1, 3, 2 ]
B : 2

i get following output:
0 1 0 3 1 0 0 0 1 0 0 3 3 1 1 3 3 0 3 0 1 0 0 3 3 0 3 0 3 3 1 3 3 0 3 3 0 3 3 0 0 0 0 1 3 0 3 1 3 1 0 3 3 3 3 3 3 3 3 1 3 1 0 0 0 1 0 3 1 0 3 0 1 1 3 0 1 1 3 3 0 1 1 3 1 1 3 0 1 0 1 3 1 3 1 1 0 0 3 0 1 1 1 3 0 3 3 0 3 0 1 3 0 0 1 3 1 1 0 0 3 0 1 1 0 1 0 0 0 1 1 0 3 3 0 1 3 0 0 1 0 1 0 0 0 0 3 0 0 1 0 3 0 3 3 3 0 3 3 1 0 1 1 0 0 3 1 1 3
It should return the size of the remaining items in the array.
Am i missing anything here?