[solved] Strange Memory Limit Exceeded verdict on Kattis?

Revision en3, by retrograd, 2019-11-09 18:14:09

I was recently trying to solve problem K. Kingdom of Ants on Kattis. However, my submission strangely receives a Memory Limit Exceeded verdict, and I can see no way of achieving that with my code.

Code: https://pastebin.com/0sXQaCdi

Do you guys spot any reasons why the above code would give MLE? Maybe some weird C++ undefined behaviour, or maybe some compiler flaw?

UPDATE: After checking for the (very degenerate) case if there is only one y-coordinate (right between lines 119 and 120), the solution gets Accepted verdict. However, I still don't understand why the initial verdict was MLE, and it was very misleading.

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  Rev. Lang. By When Δ Comment
en3 English retrograd 2019-11-09 18:14:09 9
en2 English retrograd 2019-11-09 13:02:20 259
en1 English retrograd 2019-11-09 12:53:51 518 Initial revision (published)