Extremely weak test cases in JULY 16 CHEFTET

general
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Though I have not yet started this contest, one of my roommates was doing this question , and by an extremely wrong approach got full 100 marks , and I was left astounded .

If I am allowed to reveal , then I can mention some test cases where many submissions will fail if they are using same logic as of my roommate .

It is my request to admin as well as tester to please look into the matter , and rejudge the solutions.

Edit :- Thanks a lot admin and tester for changing the test cases :slight_smile: . Also , I couldn’t understand why many people downvoted this post :stuck_out_tongue:

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question is not clear as, is it must that all Bi’s must fall on array A or some can remain? .
I took the question to be,“Some Bi’s can remain in the array B” and got accepted. In fact the the complexity is O(n) and i can’t understand why limits are n<10000.

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@vamsi_deva I didn’t know that . My roommate used all of A[] and B[ ] , and with 2 line code got it AC . And now comes storm of downvotes :stuck_out_tongue:

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This happens often here. They should add new test cases or else problem has no meaning.

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Then this particular problem should be rejudged!! After the updation of the testcases.

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This guy deserves a medal! :stuck_out_tongue:

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I wish Codechef had strict test cases like Codeforces…even easier questions would be challenging

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Can someone tell me output for second problem of july challenge for following test case

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16

1001110001000010

1 5 6 8 10 14 16 19 20 25 28 30 35 36 40 45

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I made a function solve(), which was empty back then, and tried to submit it, and GOT AN AC! :stuck_out_tongue:
I even commented on the problem. The problem is ambiguous, a lot of things are unclear!

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Well, why were you discussing the ongoing contest problem with your room mate though? You accept that you did not abide by CoC? :stuck_out_tongue: :stuck_out_tongue: :stuck_out_tongue:

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Mail codechef about this and they may update the test cases as they have done a few times earlier :)…your roommate will be surely mad at you :stuck_out_tongue:

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I solved the question by O(4*n), and the code is not short.
Unbelievable, there are many people got AC by the wrong algorithm, and with only 2 line code?!
I was so sad to know about that. QwQ

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I even commented this on the problem statement page, whether or not all B[i] have to be used and as you can expect no admin, setter, tester replied. This is sad, problem statement is not clear :frowning:

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@ashwanigautam I too have asked this question 4 days ago in problem statement page and have tagged the admin and the author. Inspite of all that no reply yet.

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Yeah definitely the problem statement is so milsleading that it took me 20 submissions to get AC and that too after referring this blog post. Thanks!! I dont know how both the problem setter and tester didnt notice the fault in the problem statement.

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If more test cases is added it should be done as soon as possible, so there is time left to submit a new correct solution, in case one’s approved solution is invalid.

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Also the explanation for the second example case is wrong. I mentioned it in a comment 2 days ago but the comment hasn’t been published nor has the example been fixed. I would fix it myself if I could.

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@admin test cases for 25 point for chefarc are really weak.I can provide you test cases on which my code should give WA but still works on yours :slight_smile:

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2 lines code logic!! I wonder what those lines could be…

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Even I commented the same on the problem statement page along with a test case. I have even figured out the probable test cases set by the admins of this particular problem. No response received yet on my comment.