I try not to do this, but you might be interested to know that four people upvoted me. So there are a bunch of people who want to see your code. I assure you,

I try not to do this, but you might be interested to know that four people upvoted me. So there are a bunch of people who want to see your code. I assure you, no one minds whether it's STL or not. The solution is the interesting bit.