Why does a hacked solution display as Accepted?

Revision en2, by txingml, 2020-10-06 13:25:22

I want to learn a fast solution for

Bubble Cup 13 - Finals [Online Mirror, unrated, Div. 1] B Valuable Paper

https://codeforces.me/contest/1423

So I click here.

And sort all accepted solutions by Execution Time.

The fastest one is https://codeforces.me/contest/1423/submission/94770930.

I read it carefully and found it is wrong. Then I noticed that it already has been hacked. https://codeforces.me/contest/1423/hacks/669563

Why does a hacked solution display as Accepted? I think it can mislead users.

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  Rev. Lang. By When Δ Comment
en2 English txingml 2020-10-06 13:25:22 7 Tiny change: '\nThe fast one is ' -> '\nThe fastest one is '
en1 English txingml 2020-10-06 13:23:11 823 Initial revision (published)