what could test #10 be?

Finally, I found the reason of the crash!!!
I supposed the input numbers were separated only by a single space but I was wrong.
Hope, this info will help you to avoid the same mistake :)

I had got WA#10, but it was because i made a stupid mistake in code and program didn't read all strings of input.This task is really simple because it is O(n) and you shouldn't use any graphs!