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When you work out the answer, it'll be obvious what you need to submit.

Is that for all the levels, or just level 513? My final algorithm, implemented in Python, solved all the levels in under two seconds each, and took about a minute to solve them all in sequence (without redownloading them).

Wine is mostly a Win32 API implementation, so you only need it for things that use the Win32 API. Pure CIL assemblies that don't use Win32 APIs can be executed through native Linux mono.

For me, it changes the colours when you hover over the dots, and doesn't put them back properly.

I'd be really interested to see what that level looks like - would it be OK to share it?

I don't think it's fair to complain that the challenge is too tedious to solve by hand - the whole point is to write a program. Having to do it a second time is exactly the reason you should always automate tedious tasks anyway, even if you don't expect to need to repeat the job. But having said tha...

You can derive the sum of squares expression from the n(n+1)/2 identity: 1) Expand out sum<1,n>(2x-1) and you'll see that it's equal to n^2 2) Hence the sum of the first n squares has n 1s, n-1 3s, n-2 5s, and so on - so it's sum<1,n>((n-x+1)(2x-1)) 3) Expand that out into separate sums and solve fo...

It depends whether "still one egg remaining" means there might be more than one. Either way, though, it's true that there's no single solution.

I suspect she was lying anyway - even the smallest solution is quite a lot of eggs.

I think people have written high-level bots to play Guitar Hero, which monitor the video stream from the console and submit controller inputs. Proper bots.

The leaderboard says otherwise...

Yes, integer division rounds. But if you write 10.0 explicitly then it will force it to use double-precision floating point instead. But dividing by 10 and then multiplying by five, without rounding, is the same as dividing by two. You've picked C up pretty quickly! But some of your syntax is odd or...

She's also only 13. Whatever you had at that age was surely nothing special - there are plenty more fish in the sea.

It's asking specifically for a value for 'randomNumber', which is declared as an int, so your answer has to be a valid int. I don't think 2147483647 will cause an exception, so no, that's not the answer, and higher numbers are not valid ints, so they don't count as answers either.

I think your assumptions are correct. I seem to remember it just says you failed to flood correctly even if the actual problem was an error, e.g. exceeding the cycle count. So if your algorithm does work on test images, but not when submitted, it's likely that it's just taking too many cycles, and y...

There should be no doubt about the right answer for Anybody Out There - if you work out what the numbers mean then it will be obvious.