>> Except now it seems like the amount is twice as long.
The amount doesn't always matter, often one little typo will cause lots of errors. For example, the missing std:: caused all 9 of your earlier errors.
Your new problem is your calls to insert aren't correct. There is a simple solution:If you want to actually use insert, then you need to make a pair object that holds the two values (because a map actually holds key/value pairs). One way to do that is to use make_pair like this:
However, I'd suggest sticking with the notation in the first example I gave for now, since it is slightly more intuitive.