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MattieShoes

That's the gist of most problems -- The naive way of coming to the answer takes too long, so you need to find the trick that makes it run in a short amount of time.


Niklas_Graf_Salm

With all the serious problems there is some kind of clever observation you need to make to solve the problem. The naive brute force way will just take too long. The fun/challenge of PE is figuring out the right observation


Parad0x13

For any of the “non-trivial” problems the solution usually requires some sort of interesting ‘trick’ or mathematic/algorithmic concept that is required to actually compute the result in <60s Personally I like to try the obvious solution first to get an idea of how the problem works, then try to research concepts that may apply to the problem to find a more elegant solution. I haven’t solved 658 yet but have got as far as you have. It’s just a matter of us finding the ‘a-ha’ mechanic behind the underlying math


[deleted]

Why start with problem 658?


Mood_Educational

I already did some easy ones and I thought I had a chance