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The B problem of today's contest (round 870) 1826B is the exactly the same problem as the gym problem 102035I.
Why the problems aren't unique? Many people just copy pasted the solution to the gym problem and gained a substantial advantage in the contest.
Please, MikeMirzayanov, make this contest unrated.
0 IQ problem. I think that if very easy problem is not unique, it is definitely not the reason to make the round unrated
Auto comment: topic has been updated by AkibAzmain (previous revision, new revision, compare).
Only 138 people solved 101035I, it didn't affect the contest that much.
disagree
Problem coincidences happen. There is no way to prevent them completely. And as long as it wasn't intensional, the contest won't be made unrated. The same thing happened quite recently with Codeforces Round #852 (Div. 2) with problem 1793F - Rebrending. In this case, the problem in question was the hardest problem of the contest and a lot of people just copied the solutions. But the contest wasn't made unrated. In this contest the problem was very easy and probably less than 100 people recognised that the problem was not new. This basically didn't affect the standings at all.
I wonder if the fact that you're getting -ve delta this contest could've influenced your opinion on this? No, there's no chance you'd want the contest to go unrated if you're going to lose rating...
You are wrong. Here's why.