Thank you, Flurin. I guess you've offered about as much help as possible. Yeah, I suppose helping with the math would maybe be too much. Looks like someone hid your last comment (wasn't me). I need all the help I can get. Thanks, again.

To give you a start, try to find a formula on how to calculate the sum of every number 0 to n. So for n = 10 it would be (1+2+3+4+5+6+7+8+9+10) = 55. You could calculat this with a for loop or you could come up with a formula.

I just tried again, with a plain old simple for loop, where my 'sz' variable just increments based on the 'size', and it just dies. The system just cannot handle a for loop for the large numbers, so how are you doing the math? How do you come up with a math formula that does the same thing as a for-loop?

Right, you created this, Kata, didn't you? So, if we can count them, and we see the pattern and everything, how do we come up with the math to solve it? The problem is that an array doesn't work. It times out. So, how did you come up with the math to solve it? If I use math based on row-by-row, it would be like 7+1+6+3+5+2+7, so how did you use that example as a way to solve every problem, all the way up to 568 kazillion?

I solved it by looking at the amount of white cells in each row.

The real test cases (the ones that get executed when you press ATTEMPT) are much bigger than the example test cases (the ones you have passed). As you see in the error message, you had a stack overflow. If you dont know what that is, this might help: https://stackoverflow.com/questions/214741/what-is-a-stackoverflowerror. Also, I dont think this is an issue, it is a question.

Hi,
What mean the below error
My solution passed all test but after I tried ATTEMPT the below error dislpyed (stack overflow)

Time: 2317msErrors: 1Exit Code: 139
STDERR:
Stack overflow.