Test case submission issue

programming
Tags: #<Tag:0x00007f1826f21e40>

#1

Is there any problem with the test cases. I am getting 5 as an output for 13, 17, 8, 9, 4, 6, but while submitting this test case is failing.
Even I am not able to check from the expected output button; its always showing 0 as output.