OCT19 EVEDG problem

Sorry to say that but I think this quote from the problem is wrong “If there are multiple solutions, you may output any one.”.
Please check this problem one more time.

No its correct , there can be multiple solutions too…

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Yes, but I don’t think all the correct solutions are considered.

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“any one”… Just output 1 of them…

If you’re getting a WA, then most probably the answer you’re outputting is not one of the correct answers.

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Whatever solution you print, the checker makes a graph for it and checks if it satisfies the condition of question, if it satisfies, you get AC verdict. So don’t worry, any correct solution is a correct solution.

Edit:- I am not sure if Codechef uses this method.

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Only the contest panel can verify the correctness of checker. How can you be sure that checker has no bug, or what algo it uses?

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I saw on codeforces one time that they use this method, so I assumed Codechef uses the same. If Codechef doesn’t, then I am sorry for the wrong information.

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Please use the comment section of the problem for such matter.

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