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# Lightning rectangle question test cases seems weak or wrong

 4 3 in this problem https://www.codechef.com/problems/RECTLIT (snackdown problem 1) 1 3 10 0 5 2 3 2 7  picking up any top AC solutions from https://www.codechef.com/status/RECTLIT?sort_by=All&sorting_order=asc&language=All&status=15&handle=&Submit=GO gives the result yes on this test case while the correct ans should be no. some of my verified solutions are : https://www.codechef.com/viewsolution/21812372 https://www.codechef.com/viewsolution/21842230 https://www.codechef.com/viewsolution/21837549 not all but most of the solutions passed with wrong logic and this case was a strong edge case in it. so many got ac without handling this case. test cases seem to be weak. asked 09 Dec '18, 14:55 41●2 accept rate: 0% Light source at (0 5) lights toward bottom right direction, (2,3) toward top right and (2,7) toward top left. (09 Dec '18, 16:58) @taran_1407 still point 1,6 is left dark (09 Dec '18, 19:12) 1 Sorry, I read the coordinates as (0,5),(3,2),(7,2). My Bad The answer for the test case you mentioned is no. (10 Dec '18, 00:53) 2 @taran_1407 I have updated bit details in the question. It seems like the test cases were weak in this question. (10 Dec '18, 07:55) @taran_1407 @helloworld0001 same problem for me my code is getting is getting WA since i consider this case as no but all teams which considered yes are getting an AC. @admin2 @vijju123 can u look into it please.it will be helpful? (10 Dec '18, 16:18) 4 Wow, in a problem based on casework they forgot to put in all cases. (10 Dec '18, 19:53) meooow ♦6★ 3 @meooow welcome to codechef XD (10 Dec '18, 19:59) @lokesh2002 you don't appear to have submitted a solution to this problem in codechef - did you submit under a team name? The problem described here is the opposite of your claim; this is about a case that isn't tested, so incomplete solutions are getting AC. If you are unexpectedly getting WA, it's more likely your code has an error. (11 Dec '18, 06:20) joffan5★ showing 5 of 8 show all

 3 So I did not feel like studying for exams and spent my evening analyzing accepted solutions for RECTLIT. I found that out of 363 accepted solutions in C++, only 253 pass the above test case. I did not check the solutions in other languages, however there are only 23 of them. So approximately 30% of all accepted solutions in C++ should get WA. Make of it what you will ¯\_(ツ)_/¯ answered 11 Dec '18, 03:12 6★meooow ♦ 7.1k●7●18 accept rate: 48% Just curious, how did you test them all? (11 Dec '18, 13:11) I wrote scripts to fetch all the accepted C++ solutions and run them locally. (11 Dec '18, 16:22) meooow ♦6★ Oh nice,Is the API open to common public now? (11 Dec '18, 17:42) 1 You wish. I don't think CodeChef API will become public in my lifetime. (11 Dec '18, 18:05) meooow ♦6★
 1 "An ideal problem has no test data." answered 11 Dec '18, 13:40 2.5k●1●5●16 accept rate: 10%
 0 Lost my chance at winning a t-shirt because of this... One of the Python solutions I've found answers no if there are no points on the perimeter but still got accepted. answered 11 Dec '18, 18:44 1 accept rate: 0%
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question asked: 09 Dec '18, 14:55

question was seen: 623 times

last updated: 11 Dec '18, 18:44