I am having problem with 1009 I am not 100% sure but I get
89 on the Sample input.I got it with 2 different
programs.One checked for adjacent 0's in the numbers betwen
[1000000000 ,10000000000)  the other was more universal and
works for any k but i can't get it to work on the sample it
still gets 89. I wonder why is this difference with one.I
also tried to write 1 + my answer and it gets W.A.

you can see the atricle about "what's wrong with 1012"
i gave a formula there.

Do you solve the problem with a expressions?
Maybe there's something wrong with your expressions.

> Do you solve the problem with a expressions?
> Maybe there's something wrong with your expressions.
i think you misunderstood my formula...