ankit_18's blog

Stuck in a question
By ankit_18, history, 4 years ago, In English

Your text to link here...Anyone solved this one??

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4 years ago, # |
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...which one?

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4 years ago, # |
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Auto comment: topic has been updated by ankit_18 (previous revision, new revision, compare).

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4 years ago, # |
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You can solve that problem using the Chinese Remainder Theorem. You want to find the first time they collide x where:

  • x = n % m
  • x = k % a

Once you have this x, you can add the LCM of m and a to x until it is >= max(n, k). (you can math the second part out to solve it in O(1), plus CRT stuff)

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    4 years ago, # ^ |
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    Thanks Can u explain it more in psuedo code format please??

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      4 years ago, # ^ |
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      No man, I'm not going to write out psuedocode that solves the Chinese remainder theorem for you after I just gave you a link to learn it if you won't even fix the link on your question.

      Here is a good youtube tutorial which helped me learn it, if you struggle reading through the Wikipedia article.

      If what I wrote still doesn't make sense after you understand CRT, then this is probably a little bit too difficult of a problem for you to be solving at the moment. It might be more helpful to practice on easier problems until you are a bit more comfortable on implementation and then come back to this in a few weeks or so.

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        4 years ago, # ^ |
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        Yes you r ri8..I should solve the easier problem first btw thanks for ur time

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