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Is the description of this problem wrong?
By JasonMendoza2008, history, 3 months ago, In English

This problem https://codeforces.net/contest/285/problem/B says "Consider all glasses are moving simultaneously during one shuffling operation.".

I don't understand how simultaneously makes sense, I solved the problem assuming one shuffling operation means moving the glasses in sequence* but I was just wondering if there is something I misunderstood.

* "if glass at position 1 goes from 1 to 2 and glass at position 2 goes from 2 to 3 then if marble was in glass at position 1 it ends up in glass at position 3" was my assumption.

Thank you for your help.

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3 months ago, # |
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Auto comment: topic has been updated by JasonMendoza2008 (previous revision, new revision, compare).

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3 months ago, # |
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No, this isn't wrong. It means all glasses move in one moment

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    3 months ago, # ^ |
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    But then if they all move in one moment and we take back my example the marble would end up at position 2 right? because we swap 1 and 2 at the same time we swap 2 and 3. Which would barely make sense because where would glass 2 end up, in 1 or in 3? I'm sorry if I still miss something.

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      3 months ago, # ^ |
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      You have array p that clearly says where glass sould go. Glass that was on 1 would go to p[1] and glass that was on 2 would go to p[2]...

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        3 months ago, # ^ |
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        So it's not simultaneous, it's sequential? because 1 goes to p[1] before p[1] goes to p[p[1]]?

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