[Community Puzzle] Organic Compound - Puzzle discussion

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Coding Games and Programming Challenges to Code Better

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Created by @ethaneCH3CH3,validated by @TBali,@Ayza and @TimesCantCode.
If you have any issues, feel free to ping them.

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Good fun puzzle.
A hint for anyone getting stuck with some of the tests;

Note that the number of oxygen atoms is limited to those in the noted functional groups
(i.e. one for -anol / -anal / -anone, and two for -anoic acid)

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So I have a problem with the explanations about how we are supposed to sort the molecules.
The problem is that there are rules not indicated in the rules, like for Ketones, you need a third carbon, or Alcohols can only have one hydroxyl group.
Can you fix it please ?

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Ketone (also known as alkanone) contains 2n hydrogen atoms.

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Thank you for your feedback.
For ketones, the constraint section of the puzzle already covers that n (the number of carbon atoms) must be more than or equal to 3.

For alcohols, I have already stated in the statement:

Alcohol contains a -OH group…

I hope that helps! :slight_smile:

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I do not see a constraint that Ketones require 3 or more Carbon. In fact, the third example states that the molecule could be a Ketone because it contains 2 carbon and 4 hydrogen.

Then it follows with not being a Ketone because there are 2 oxygen… but there is no Oxygen constraint listed above for Ketones. What is the Oxygen constraint for Ketones?

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Also “contains a -OH group at the end”:

  • Does NOT mean that there are no other “OH” pairs (OHOHxxxxOH still qualifies).
  • Does NOT mean that there is only one OH pair at the end (xxxxOHOH still qualifies).

If the final OH is the only OH allowed, please be more precise.

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I had to add extra conditions to pass some OTHERS cases in the initial tests, as the rules did not clarity:

  • -COO- is not -CO-
  • HO-…-OH is not an alcool

Maybe make that more obvious?

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Hello there,

In the constraint part of the statement, it clearly states that:

If the organic compound is a ketone, n ≥ 3

In the Goal section of the statement, it tells you that the carbonyl group (-CO-) appears exactly once:

The carbonyl functional group -CO- appears in the middle of the chemical formula exactly ONCE.

Also, there is a statement in bold stating that the oxygen atoms only come from the functional group:

Please note that the total number of oxygen atoms would NOT exceed those present in the functional group in this problem.

As this is a puzzle, I would like to encourage coders to think, rather than simply giving the answers.

Hopefully this helps you understand this problem a bit more!

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@Neuromution @sblondeel

Regarding the -OH tests, I have added a line to clarify the problem:

For the sake of simplicity, output OTHERS if the organic compounds contain more than one functional group. For instance, you should output OTHERS for the compound HOCH2OH.

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Hello,

Regarding your second bullet point, there is a line in bold stating that the oxygen atoms only comes from the functional group:

Please note that the total number of OXYGEN atoms would NOT exceed those present in the functional group in this problem.

Hopefully that helps!

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what is a functional group?

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Functional group is a part of a compound that defines what type of compound it is. For example, if a compound contains the -OH functional group (e.g. CH3CH2OH), it is an alcohol. For other types of functional group, please check the statement of the problem.

hope that helps!