This is the third time I am facing this issue.
when I clicked on the submit tab my four test cases were right and once was wrong, then I rechecked my code again It was wrong on the last test case. Then I saw the code in next video but my code was correct. At last I unlocked the last test case and I was very sad to see that the input in this last file is wrong. In the last test case input is taken in n lines rather in one line.
I changed the code to this and now last is correct and first four shows incorrect.
This same problems was faced on previous few questions.
Kindly rectify this problem as this waste my time and energy. Also I unlocked the test case I won’t be able to get points for this even it’s not a mistake from my end.
(I code in Python).
Submission problem in Buy and sell stock problem
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Testcases are working fine now 
Sir I unlocked the test cases and now I’m not awared any points for that. Does it will affect my course progress?
At the end of the course if there is some issue in getting certi then write a mail regarding the issues u faced to [email protected] and I am sure they will help u with it
Also if ur code runs on some testcases and not on other so always open a doubt so that TA will check if there is something wrong with the testcases format or not.