Gmail Contacts Import Tool

I am needing a simple tool that will take a list of gmail accounts and import a different list of contacts to each one. I already have the contact split up into lists of equal parts of 10,000 contacts and saved in Google csv format. I need a tool that will read from the list of gmail accounts with passwords; log into the 1st gmail account, import the 1st list of contacts, log out, log into the 2nd gmail account, import the 2nd list of contacts, log out, log into the 3rd gmail account, import the 3rd list of contacts, log out, etc... Until it reaches the end of the list. The tool needs to be faster than me doing it manually and must not use alot of resources/memory. I believe the Google has an API that can be used for this. Should be fairly simple to make. If you can do it, place your bids.